Would expect a seller to be willing to lose money on shipping?
A flat rate gameboard box costs $17 to the other side of the country. Perhaps we balk at the extra $8 they are charging for packing and handling. I dont think anyone assumes they'll lose money on shipping, but then again, I don't think they expect to profit on shipping that much.
Now is this a fair amount? perhaps. One has to keep in mind the cost of boxes (assuming they don't get free ones from the USPS for priority), packing material, paypal and ebay fees, profit, etc.