Legal Question in Consumer Law in Georgia

Until you sign on the dotted line, unless the contract gives you time to get out of it (which would be extremely rare). If there is a chance you might change your mind, it is the responsibility of an adult purchaser to be responsible and not sign a contract.

Zero seconds. Contracts are binding when you sign them. One small exception: a small handful of car contracts (I think Carmax is one) do contracts where you can back out for a few days. (In other words, you bought it and there's no changing minds).