Yes, off the record you should be somewhat flexible as a seller. If someone makes me a formal offer and then sends me an email within 24 hours that they changed their mind or they made a mistake, I'm not going to force them to follow through with the payment and wind up with something they can't afford or don't want. But an ounce of prevention is worth a pound of cure. Think before hitting the buy now button. This is like the game show Deal or No Deal.
