How does one avoiding losing their shirts with auctions houses?

[Aquarian Sports Cards]

Originally Posted by Leon

To the original question, buy low and sell high....and never, ever pay a seller's commission, no matter how great the AH says they are......

As someone who is in the process of becoming an auctioneer, statements like this are so disheartening. If you listened to everybody's advice in this thread you would never deal with a house that charged a seller's commission or over 12.5% buyer's premium. I'd like you to tell me what other business you know of that is expected to survive on a 12.5% margin? I know when I sell as a dealer I certainly couldn't make those margins work. Any full time guys here want to chime in on trying to make a living on a 12.5% GROSS margin? Trust me, one of the reasons I am getting into the auction game is because I think it can be done better, but man I don't know how you expect someone to make a living let alone run a company on the numbers you all appear to be suggesting.