In Scotland, you put an offer in through your solicitor and if the seller agrees, that is that. No backing out, no change in price. It is a much easier system. However there is the 'offers over' scenario where the seller quotes the min. price they will accept. When the market was buoyant, then sellers could expect up to 20% above the 'offers over' price. Not nowadays, when competition is not so fierce. We also have 'closing dates' sometimes (if there is a lot of interest in a house). Then you have to get your offer in before the closing date and the highest offer wins. No second chances or rebids allowed.
Bramble