I'm behind watching episodes. What happened to the rule that the cash offer cannot be changed? You ask for $500,000 and have to stick to that amount or "walk away with nothing.". This is the third episode in a row where the cash offer has been changed in negotiations, instead of the percentage. Can't remember in the last few seasons of an entrepreneur trying to change the cash amount. In the last episode, the shark was actually the one who up'ed the cash offer.