Posted By:
jackgoodmanI once heard Mr. Mint tell a walk-in that he had made an offer to, that the offer was only good at that moment. That if the seller wanted to walk around the show offering his cards to other dealers, and ended up returning to Mr. Mint's table, that Mr. M's offer was obviously too high and he would not offer that much if they ended up back at his table.
Psychologically, not a bad gambit and keeps the seller/walk-in from getting competing bids.