OPINION
¶ 1 Plаintiff/appellant the Estate of Martha Nelson, through its copersonal representatives Edward Franz and Kenneth Newman, *565 appeals from a summary judgment in favor of defendants/appellees Carl and Anne Rice in the Estate’s action seeking rescissiоn or reformation of the sale of two paintings to the Rices. The Estate argues that these remedies are required because the sale was based upon a mutual mistake. The Estate also contends that enforcing the sale “contract” would be unconscionable. We affirm.
Facts and Procedural History
¶ 2 We view the evidence and all reasonable inferences therefrom in the light most favorable to the party opposing the summary judgment.
Hill-Shafer Partnership v. Chil-son Family Trust,
¶ 3 Responding to a newspaper advertisement, Carl Rice attended the public estate sale and paid the asking price of $60 for two oil paintings. Although Carl had bought and sold some art, he was not an educated purchaser, had never made more than $55 on any single piece, and had bought many pieces that had “turned out to be frauds, forgeries or ... to have been [created] by less popular artists.” He assumed the paintings were not originals given their price and the fact that the Estate was managed by professionals, but was attracted to the subject matter of one of the paintings and the frame of the other. At home, he compared the signatures on the paintings to those in a book of artists’ signatures, noticing they “appeared to be similar” to that of Martin Johnson Heade. As they had done in the past, the Rices sent pictures of the paintings to Christie’s in New York, hoping they might be Heade’s work. Christie’s authenticated the . paintings, Magnolia Blossoms on Blue Velvet and Cherokee Roses, as paintings by Heade and offered to sell them on consignment. Christie’s subsequently sold the paintings at auction for $1,072,000. After subtracting the buyer’s premium аnd the commission, the Rices realized $911,780 from the sale.
¶ 4 Newman and Franz learned about the sale in February 1997 and thereafter sued McKenzie-Larson on behalf of the Estate, believing she was entirely responsible for the Estate’s loss. The following November, they settlеd the lawsuit because McKenzie-Larson had no assets with which to pay damages. During 1997, the Rices paid income taxes of $337,000 on the profit from the sale of the paintings, purchased a home, created a family trust, and spent some of the funds on living expenses.
¶ 5 The Estate sued the Rices in late January 1998, alleging the sale contract should be rescinded or reformed on grounds of mutual mistake and unconscionability. In its subsequent motion for summary judgment, the Estate argued the parties were not aware the transaction had invоlved fine art, believing instead that the items exchanged were “relatively valueless, wall decorations.” In their opposition and cross-motion, the Rices argued the Estate bore the risk of mistake, the doctrine of laches precluded reformation оf the contract, and unconscionability was not a basis for rescission. The trial court concluded that, although the parties had been mistaken about the value of the paintings, the Estate bore the risk of that mistake. The court ruled the contract was not unconscionable, finding the parties had not negotiated Carl’s paying the prices the Estate had set. Accordingly, the court denied the Estate’s motion for summary judgment and granted the Rices’ cross-motion. The Estate’s motion for new trial was denied, and this appeal followed.
Standard of Review
¶ 6 Summary judgment is proper when the evidence presented by the party opposing the motion has so little probative value, given the required burden of proof, that reasonable jurors could not agree with the opposing party’s conсlusions.
Orme School v. Reeves,
Mutual Mistake
¶ 7 The Estate first argues that it established a mutual mistake sufficient to permit the reformation or rescission of the sale of the paintings to the Rices.
1
A party sеeking to rescind a contract on the basis of mutual mistake must show by clear and convincing evidence that the agreement should be set aside.
Emmons v. Superior Court,
¶ 8 In concluding that the Estate was not entitled to rescind the sale, the trial court found that, although a mistake had existed as to the value of the paintings, the Estate bore the risk of that mistake under § 154(b) of the Restatement, citing the example in comment a. Section 154(b) states that a party bears the risk of mistake when “he is aware, at the time the contract is made, that he has only limited knowledge with respect to the facts to which the mistake relates but treats his limited knowledge as sufficient.” In explaining that provision, the Washington Supreme Court stated, “In such a situation there is no mistake. Instead, there is an awareness of uncertainty or conscious ignorance of the future.”
Bennett v. Shinoda Floral, Inc.,
¶ 9 The Estate contends neither party bore the risk of mistake, arguing that § 154 and comment a are not applicable to these facts. In the example in comment a, the risk of mistake is allocated to the sellеr when the buyer discovers valuable mineral deposits on property priced and purchased as farmland. Even were we to accept the Estate’s argument that this example is not analogous, comment c clearly applies here and states:
Conscious ignorance. Even though the mistaken party did not agree to bear the risk, he may have been aware when he made the contract that his knowledge with respect to the facts to which the mistake relates was limited. If he was not only so aware that his knowledge was limitеd but undertook to perform in the face of that awareness, he bears the risk of the mistake. It is sometimes said in such a situation that, in a sense, there was not mistake but “conscious ignorance.”
¶ 10 Through its personal representatives, the Estate hired two appraisers, MeKenzie-Larson and an Indian art expert, to evaluate the Estate’s collection of Indian art and artifacts. MeKenzie-Larson specifically told Newman that she did not appraise fine art. In his deposition, Newman testified that he had not been concerned that McKenzie-Larson had no expertise in fine art, believing the Estate contained nothing of “significant value” except the house and the Indian art collection. Despite the knowledge that the Estate contained framed art оther than the Indian art, and that MeKenzie-Larson was not qualified to appraise fine art, the personal representatives relied on her to notify them of any fine art or whether a fine arts
*567
appraiser was needed. Because McKenzie-Larsоn did not say they needed an additional appraiser, Newman and Franz did not hire anyone qualified to appraise fine art. By relying on the opinion of someone who was admittedly unqualified to appraise fine art to determine its existence, the personal representatives consciously ignored the possibility that the Estate’s assets might include fine art, thus assuming that risk.
See Klas v. Van Wagoner,
¶ 11 The Estate asserts that the facts here are similar to those in
Renner,
in which real estate buyers sued to rescind a contract for acreage upon which they wished to commercially grow jojoba after discovering the water supply was inadequate for that purpose. The supreme court concluded that the buyers could rescind the contract based upon mutual mistake because both the buyers and the sellers had believеd there was an adequate water supply, a basic assumption underlying formation of the contract. The parties’ failure to thoroughly investigate the water supply did not preclude rescission when “the risk of mistake was not allocated among the pаrties.”
¶ 12 Furthermore, under Restatement § 154(c), the court may allocate the risk of mistake to one party “on the ground that it is reasonable in the circumstances to do so.” In making this determination, “the court will consider the purposes of the parties and will have recourse to its own general knowledge of human behavior in bargain transactions.” Restatement § 154 cmt. d. Here, the Estate had had amрle opportunity to discover what it was selling and failed to do so; instead, it ignored the possibility that the paintings were valuable and attempted to take action only after learning of their worth as a result of the efforts of the Rices. Under these circumstances, the Estate was a victim of its own folly and it was reasonable for the court to allocate to it the burden of its mistake.
Unconscionability
¶ 13 The Estate also argues that enforcement of the “contract” to sell the paintings is unconscionable. The determination оf a contract’s unconscionability is for the trial court as a matter of law.
Maxwell v. Fidelity Financial Services, Inc.,
¶ 14 Citing Maxwell, the Estate contends this is a case of substantive unconscionability, which concerns the actual terms of the contract and the relative fairness of the parties’ obligations. Indicia of substantive unconscionability include one-sided terms that oppress or unfairly surprise an *568 innocent party, an overall imbalance in the obligations and rights imposed by the bargain, and significant cost-price disparity. Maxwell. Unconscionability is determined as of the time the parties entered into the contract. See id.; cf. A.R.S. § 47-2302.
¶ 15 In refusing to rescind the sаle on the basis of unconscionability, the trial court stated that, “[w]hile the results of the transaction may seem unconscionable to the [Estate] in hindsight, the terms of the contract certainly were not.” We agree. The transaction involved no negotiation, thе Estate dictated
the
terms of the contract by naming a price for each painting, and Carl paid the asking prices. “ ‘Courts should not assume an overly paternalistic attitude toward the parties to a contract by relieving one or another of them оf the consequences of what is at worst a bad bargain ... and in declaring the [contract] at issue here unconscionable, we would be doing exactly that.’ ”
Pacific Am. Leasing,
¶ 16 Affirmed. In our discretion, we deny the Rices’ request for attorney’s fees on appeal.
Notes
. Reformation is not an available remedy under these facts. It is a remedy to correct a written instrument that fails to express the terms agreed upon by the parties and "is not intended to enforce the terms of an agreement the parties never madе."
Isaak
v.
Massachusetts Indent. Life Ins. Co.,
. In view of our conclusion that the Estate bore the risk of any mistake in the paintings’ value, we need not address the remainder of its mutual mistаke arguments.
. In its reply brief, the Estate argues that a party's negligence does not bar avoidance or reformation of a contract for mutual mistake, claiming that § 157 of the Restatement requires bad faith or gross negligence. This argument is waived by the Estate’s failure to raise it in its opening brief.
General Motors Corp. v. Arizona Dep't of Revenue,
