half way there a legally binding contract is based on an OFFER (could be to sell, could be to purchase) and ACCEPTANCE. Then the contract is binding. Its easy when there are only 2 parties involved. i.e. you and I, one offers the other accepts all good. However when the OFFER isn't exclusive i.e. to one party but open to public then as someone here pointed out how do you know if you the person accepting were the first to accept. So the person who made offer needs to acknowledge that you have accepted and that the deal is binding. Law is never black and white more kind of grey. I guess this would be a bad time to mention the word integrity, does it still exist ?