Washington, decided that it was time to sell his car. However, he was not certain of its value and so, when he advertised the car, he left out the price. When Sam responded to the advertisement, he asked for the price. Washington responded by saying, 'Oh, I do not know. I guess a fair would be around a couple of thousand dollars. When Sam arrived the following day with $2000 for the car, Washington told him that he really meant $2500. Does a contract Exist?