Adverse selection If every buyer can tell a peach from a lemon then lemons sell for between $1, 000 and $1, 200, and peaches sell for between $2,000 and $2, 400. Gains-to-trade are generated when buyers are well informedAdverse Selection If every buyer can tell a peach from a lemon, then lemons sell for between $1,000 and $1,200, and peaches sell for between $2,000 and $2,400. Gains-to-trade are generated when buyers are well informed