Way I see it, is that even if there are a few dollars extra, there's always the 'unmentionables' that come into play. The little bags to put parts in, the bubble wrap to make sure things are protected, the boxes, envelopes, whatever... it all adds to the cost. I run group buys myself and I have the same problem, I quote people the price for the item with postage, but those elastic bands that hold everything together had to be bought and paid for.... Don't think I've ever really broken even on a group
buy yet!
Similarly Dan, I'm going to send you $40 via paypal... I figured $10 a unit extra should cover myself and help offset the others. Alot of people live on a budget these days, and simply may not be able to afford to send more. Besides, if I were going to run at a $533 loss on a group buy, I would seriously reconsider ever doing it again, and as you can see Dan, we don't want you to have any doubts!