in my case the buyer decided to go back up and re-offer their highest offer when they saw I took the domain to auction. They offered 2,000 euro more just to end the auction there and then. I frantically got on the phone with Sedo and I was told this was impossible. Despite my assurance that I would obviously give Sedo their full 10%. I was lucky enough that the buyer didn't completely exit the sale, because they were a company and needed the domain. Sedo lost 200 euro and I lost 1,800 euro because of their lack of provision for a mutual closure. There were no other bids.