You need to pay attention to the earnest money, your escape clauses, the purchase price and when you set your deadlines/dates. You should set up your contract so that your earnest money is refundable until the end of your due diligence period. When you determine how much earnest money to put down, put down enough earnest money that your seller takes you seriously. If you want to win in that situation, you need to make sure that your earnest money is competitive. That way you do not lose your earnest money.