Bernie and Phil's Great American Surplus store placed an ad in the Sunday Times stating, "Next Saturday at 8:00 A.M. sharp, 3 brand new mink coats worth $5,000 each will be sold for $500 each! First come, First served." Marsha Lufklin was first in line when the store opened and went directly to the coat department, but the coats identified in the ad were not available for sale. She identified herself to the manager and pointed out that she was first in line in conformity with the store's advertised offer and that she was ready to pay the $500 price set forth in the store's offer. The manager responded that a newspaper ad is just an invitation to negotiate and that the store decided to withdraw "the mink coat promation." Review the text on unilateral contracts and decide.