Case:

Wells Fargo Credit Corp. (Wells Fargo) obtained a judgment of foreclosure on a house owned by Mr. and Mrs. Clevenger. The total indebtedness stated in the judgment was $ 207,141. During the foreclosure sale that followed Wells Fargo was represented by a paralegal, who had attended more than 1,000 similar sales. Wells Fargos handwritten instruction sheet informed the paralegal to make one bid at $ 115,000, the tax-appraised value of the property. Because the first 1 in the number was close to the $, the paralegal misread the bid instruction as $ 15,000 and opened the bidding at that amount. Harley Martin, who was attending his first judicial sale, bid $ 20,000. The county clerk gave ample time for another bid and then announced: $20,000 going once, $20,000 going twice, sold to Harley The paralegal screamed: Stop, sorry I made a mistake! Meanwhile, the certificate of sale was issued to Martin. Wells Fargo requested the court to set aside the judicial sale based on its unilateral mistake.

Question:

Is there a valid contract between Martin and Wells Fargo?