Once upon a time, not too long ago, there was a contract and a client. The contract gave the client an option to buy a business based on obtaining three appraisals. After the first two appraisals were for the same amount, the seller told the client that he would waive the third appraisal. The seller tendered a contract of sale for $3 million. A couple of weeks passed, the attorneys exchanged suggested revisions, but on the day before the deadline to exercise the option, the seller sent back the contract with a surprise: He has changed it, increasing the price of the sale by $500,000, based on a third appraisal that he had obtained (despite his stated intentions).