As a retailer I can tell you I haven't had any problems here in the store. I will also say I don't have many people come through using MC, mostly Visa/AMEX. I would also very quickly tell MC to shove their $1000 fee somewhere they don't want it and not accept it. I would also post a listing as to why I no longer accept it to ensure my MC customers call to raise havoc with whatever poor guy has to take the call. In fact, I may call them myself, regardless of the fact that I don't carry a MC just because it is such BS.