Whether Johnson's sale of his wheat to another buyer before the contract delivery date estopped him from showing that the market price at the actual delivery time was below Acme's contract price.
Holding
No. Johnson's prior sale did not estop him from relying on the market price at the agreed time and place of delivery.
Reasoning
For a seller's failure to deliver personal property at a fixed time and place, the buyer's damages are measured by the difference between the contract price and the market price at that time and place. The relevant date was when Johnson completed threshing, because the contract called for delivery "from thresher" and payment upon delivery.
The evidence conclusively showed that Johnson did not complete threshing until about July 29, and there was no evidence that he intentionally delayed threshing to manipulate the market. At that time, wheat of the contracted kind was worth no more than $1 per bushel—less than Acme's $1.03 contract price. Acme therefore suffered no market-loss damages from nondelivery.
Johnson's sale to Liberty Mills for $1.16 earlier in July did breach his obligation to Acme, but it did not alter the governing damages rule. He was not obligated to deliver particular identified wheat; he could have performed by delivering other wheat of the agreed quantity and quality. By selling his own wheat, he assumed the risk that the market at the delivery date would rise and expose him to damages, but Acme could not claim damages based on the earlier resale price when the market at delivery was lower.
Estoppel requires conduct that induces another party to act to its prejudice. Nothing about Johnson's earlier sale caused Acme to change its position detrimentally. Thus, the proposed amended reply did not state a basis for avoiding the ordinary delivery-date measure of damages.