Mickey, an accountant, has a garage sale at his home once a year or so to get rid of unwanted items. Mickey tells his first customer of the day that the price on a used lawn mower is $50. The customer leaves to check a few other garage sales but returns and tells Mickey he is ready to buy the mower. Mickey tells him that the price is now $60. Mickey's first offer to sell at $50 was irrevocable and he must sell at that price to this customer.

True

False