> Usually (well, here in Poland) it's around 10% of value, that buyer loses if they change mind but seller have to pay 2x if they back off. Same procedure in I

> Usually (well, here in Poland) it's around 10% of value, that buyer loses if they change mind but seller have to pay 2x if they back off. Same procedure in Italy with the difference that there is no mandated amount. Of course the higher it is the less likely is that the seller backs out of the deal.