Desert Irrigation brought suit in the district court upon written and oral contracts to collect money claimed to be due for the construction of irrigation pipelines for defendants. Defendants counterclaimed for crop losses and other damages allegedly due to completion delays and faulty construction. Following a jury trial, judgment was entered in favor of Desert Irrigation on its claims against each defendant. Defendants contend that with respect to each contract, Desert Irrigation was required to prove the value of the services performed and failed to do so. Defendants have appealed from the judgment, asserting error in the trial court’s refusal to grant defendants’ motion for a directed verdict at the end of Desert Irrigation’s case-in-chief and at the close of trial. We affirm in part and reverse in part.
In February, 1976, Desert Irrigation entered into a written contract with defendant, Water User’s Association of the Carl-sen Lateral, to construct an underground irrigation pipeline known as the Carlsen Lateral for the benefit of the Association. The contract recited that the pipeline was to be installed “according to the specifications furnished or to be furnished to [Desert Irrigation] by [the Association] ... said specifications to include all engineering and other requirements as [the Association] may elect.” Mr. Looney, president and owner of Desert Irrigation, testified that the officers of the Association furnished him with specifications and a materials worksheet for the Carlsen Lateral which came from the “A.S. C.S.” office. Mr. Looney testified he furnished the Association with an estimate of the cost of the project, but it was not produced at trial, nor was the amount of it shown by the evidence. He testified further that after the route of the pipeline was staked on the ground some of the defendants and other landowners requested changes in the location of parts of the line and fixtures. These changes were agreed to and approved after the written contract between Desert Irrigation and the Association was signed. The contract did not specify the price for which the work was to be done. It merely said Desert Irrigation was to be paid “a sum not exceeding $25,000.00 for the installation of said pipe line.” The sum of $4,000 was paid in January, 1976, and the balance was to be paid upon completion and “upon submission ... of a final invoice showing the precise amount due, not to exceed $25,000.00 total as aforesaid.”
While work was getting underway on the Carlsen Lateral for the Association, the other defendants, the Tolmies, the Harrises, the Bulgins, and the Callaways, each entered into separate oral agreements with Desert Irrigation for Desert Irrigation to construct underground pipelines leading off of the Carlsen Lateral onto those defendants’ lands. There was no evidence that any of the oral contracts specified the price for the work to be done although Mr. Looney testified he furnished each defendant with an estimate. The written estimate he furnished to the Tolmies was introduced into evidence. After Desert Irrigation finished its work on the various projects, Mr. Looney presented all of the defendants with billings. The Association was billed a total of $25,987.42, with a $4,000 credit for a payment made at the start of construction.1 The Tolmies were billed $3,755.22. The Callaways were billed $1,408.48, less $839 credit given for labor contributed to the project by Mr. Callaway. The Bulgins were *675billed $435.08. The Harrises were billed $3,027.49.
Throughout the trial Desert Irrigation contended it had a contract to construct the Carlsen Lateral for a price of $25,000. Desert Irrigation alleged the price was exceeded because of changes requested by defendants. The defendants contended no set price was agreed to with any of the contracts, but that, in each case, Desert Irrigation was to be paid the reasonable value of the work and services performed up to the maximum of $25,000. At the close of Desert Irrigation’s case-in-chief, and again at the close of all of the evidence, all defendants moved for a directed verdict under I.R.C.P. 50(a), on the ground that Desert Irrigation’s evidence failed to prove the reasonable value of work done for each defendant. The trial court correctly ruled that Desert Irrigation had the burden to show what was furnished both in labor and materials, and what was reasonable as far as the value of the materials and labor furnished. See Traylor v. Henkels & McCoy, Inc., 99 Idaho 560, 562, 585 P.2d 970, 972 (1978); Peavey v. Pellandini, 97 Idaho 655, 659-60, 551 P.2d 610, 614-15 (1976); and Weber v. Eastern Idaho Packing Corp., Inc., 94 Idaho 694, 697, 496 P.2d 693, 696 (1972); overruled on other grounds, Pierson v. Sewell, 97 Idaho 38, 539 P.2d 590 (1975).
In Smith v. Great Basin Grain Co., 98 Idaho 266, 561 P.2d 1299 (1977), the court stated:
On a motion for directed verdict pursuant to I.R.C.P. 50(a) or for judgment notwithstanding the verdict, pursuant to I.R.C.P. 50(b), the moving party admits the truth of the adverse evidence and every inference that may be legitimately drawn therefrom.... Neither motion should be granted if there is substantial evidence to justify submitting the case to the jury or to support the verdict once it has been returned. Barlow v. International Harvester Co., 95 Idaho 881, 886, 522 P.2d 1102, 1107 (1974); Mann v. Safeway Stores, Inc., 95 Idaho 732, 736, 518 P.2d 1194, 1198 (1974).
98 Idaho at 274, 561 P.2d at 1307. See also Curtis v. Dewey, 93 Idaho 847, 848, 475 P.2d 808, 809 (1970). The substantial evidence test requires only that the plaintiff produce “sufficient evidence (not a mere scintilla) from which reasonable minds could conclude that a verdict in favor of the plaintiff was proper.” (Emphasis added.) Gmeiner v. Yacte, 100 Idaho 1, 4, 592 P.2d 57, 60 (1979); Mann v. Safeway Stores, Inc., supra.
Each of the bills submitted to each defendant by Desert Irrigation listed in detail the pipe and fittings billed to that defendant, with a charge for each item or a unit charge. The labor charge for each job was a lump sum figure, which did not disclose the hours worked or the services performed or the hourly rate. There was no explanation given on the billing or at trial how Desert Irrigation computed either the material charges or the labor charges. Desert Irrigation offered no evidence as to what the materials charged to the job actually cost. Mr. Looney denied on cross-examination that such charges represented either his cost or his cost plus a percentage. There was no evidence as to what the labor furnished by Desert Irrigation actually cost Desert Irrigation. During cross-examination of Mr. Looney, the defendants introduced copies of Desert Irrigation’s tax forms showing that Desert Irrigation paid a total of $1,613 to six employees during the time Desert Irrigation worked on this project, not including the $839 paid Mr. Callaway. The total labor amount charged to the defendants was $7,090, which figure inferentially included Mr. Looney’s own labor and services in construction of the projects.
Prior to the start of construction, Mr. Looney, on behalf of Desert Irrigation furnished the Tolmies with an estimate of the cost for laying the Tolmies’ irrigation line, in the amount of $2,445. Tolmies wanted the Carlsen Lateral to take a different route through their property and wanted the locations of certain surge valves and a drain changed. These changes were agreed to and the estimate was revised to $2,612. Copies both of the original and the revised *676estimates were introduced into evidence during Desert Irrigation’s case-in-chief. Desert Irrigation’s only witness, Mr. Looney, testified that after the Tolmies’ estimate was revised to $2,612, Mr. Tolmie decided he wanted the sprinklers on his own line spaced 50 feet apart rather than the proposed 120 feet. The evidence was that this increased the number of sets of tees, risers, and valves from 10 to 22 and the labor to install them was also increased. This change is reflected in the billing the Tolmies received but is not shown in any estimate.
The fact that Mr. Tolmie received a written estimate showing the per unit or per item charge for materials to be used in the Tolmie pipeline, and an estimated figure for labor to construct that line, coupled with the fact that he then authorized Desert Irrigation to go ahead with construction, indicates that Mr. Tolmie thought the original estimate and the revised estimate were reasonable. The jury could make this inference.” The jury could also consider that the final billing shows the per unit charge for the 22 sets of tees, risers, and valves was slightly less than the per unit charge contained in the earlier estimates for 10 such sets. The jury could also consider that the Tolmie estimates contained a figure of $508.80 for labor, while on the billing the labor figure was increased to $710. The jury also had Mr. Looney’s testimony as to the additional work that his crew did to construct the Tolmie line with the changes desired by Mr. Tolmie. From this evidence, established during Desert Irrigation’s casein-chief, the jury could infer — by comparison of the estimates and the billing — that the charges made by Desert Irrigation to the Tolmies were reasonable. We hold that there was sufficient evidence for the case to go to the jury on the claim of Desert Irrigation against the Tolmies.
We believe Desert Irrigation did establish by reasonable inference, if not by direct evidence, that all the items of material charged to the respective jobs were used in the construction. However, there was no testimony by anyone on behalf of Desert Irrigation that the amount charged for materials and labor was reasonable and necessary to accomplish each of the other jobs. Desert Irrigation put in no evidence as to the basis for any of its charges, nor as to the reasonableness of its charges. In fact, Desert Irrigation’s counsel objected to efforts by the defendants’ counsel to inquire into the basis of the charges for both labor and materials. When the court permitted cross-examination of Mr. Looney about the basis for the labor charges, he stated he was unable even to give an estimate of the hours spent by any of the men on any one of the jobs. He stated that the charges made for materials were neither Desert Irrigation’s cost, nor cost plus some percentage. On the other hand, he testified generally as to what work was done. He explained why certain requested changes resulted in more materials and labor being required than originally estimated, but he was unable to detail — even approximately— the number of additional hours of labor, or the additional labor cost to Desert Irrigation resulting from the changes. During the defendants’ case-in-chief the only evidence presented by them that the charges were unreasonable was presented through the testimony of one employee of Desert Irrigation. This witness stated that the workers were not always kept busy and sometimes they had to go look for Mr. Looney in town to find out what the workers were to do next.
Mr. Looney testified that he also furnished estimates to the Association, to Harris, to Bulgin, and to Callaway. These estimates were not produced at trial, neither are the amounts of such estimates in the record. The fact that such estimates were given provides no evidence of reasonableness of the charges made in this case to these defendants.
While Desert Irrigation and the Association had an express contract, which recited that Desert Irrigation would be paid a sum not to exceed $25,000, from that we cannot infer that the bill submitted by Desert Irrigation to the Association for $25,987.42 is reasonable. There was no testimony as to how the $25,000 was arrived at, or what *677items of work it included. The $25,000 figure in the written contract was not the contract price agreed to by the parties, it was the ceiling price. We hold that the contract limit of $25,000 does not provide evidence of the reasonableness of Desert Irrigation’s charges. In support of an opposite holding, Desert Irrigation has cited Mills v. Sharpe, 272 P.2d 641 (Colo.1954), and Lorang v. Flathead Commercial Co., 112 Mont. 146, 119 P.2d 273 (1941). Because the factual situations in these two cases are so different from the present case, we do not consider them persuasive.
Desert Irrigation had the burden to prove that the amount of labor and material used was reasonable for each job performed, and that the charges made in each claim for these amounts was reasonable. Weber v. Eastern Idaho Packing Corp. Inc., supra; Nagele v. Miller, 73 Idaho 441, 253 P.2d 233 (1953); Grau v. Mitchell, 156 Colo. 111, 397 P.2d 488 (1964); Midwest Fabrication, Inc. v. Woodex, Inc., 40 Or.App. 675, 596 P.2d 581 (1979).
In Midwest Fabrication the Oregon Court of Appeals said:
To support a claim for the reasonable value of labor and materials, one must prove that the labor and materials were actually expended for the benefit of the defendant, that the amounts of labor and materials used were reasonable and that the charge for those amounts is reasonable. Farris v. McCracken, 253 Or. 273, 453 P.2d 932 (1969); Timber Structures v. C. W. S. G. Wks., [191 Ore. 231, 229 P.2d 623 (1951)]
596 P.2d at 583.
We hold that Desert Irrigation produced no evidence upon which the jury could conclude, without speculation, that the amounts billed by Desert Irrigation to the Association, to Harris, to Bulgin, and to Callaway for labor and materials were reasonable. We reverse the judgment as to these defendants, and remand to the district court for entry of a judgment consistent with this opinion. We affirm the judgment as to the Tolmies. With the exception of the Tolmies, appellants are awarded costs.
WALTERS, C. J., concurs.. After this controversy arose the Association paid $9,330.17 to a supplier who had furnished pipe for the project to Desert Irrigation. During a pretrial conference it was stipulated that Desert Irrigation’s claim would be reduced by this amount.