Okay so I am in no way attempting to start a flame war but I would like to clarify that at your current shipping prices, you are in line to make significant profit with this group buy. Obviously I don't mind in the slightest if you do, and I believe you deserve it and should be making something in exchange for your time. However you are clearly advertising it as pro-bono and blatantly knocking group buy organizers such as myself that do. If you're going to be using bubble mailers, even including the cost of buying the them, your domestic cost is going to be under $2, and international (Canada OR anywhere else) under $4... So a profit of $2-4 per package. You're looking to get $75-100+ orders, so that's a few hundred dollars and the cost of bubble mailers is only $15-20. You won't be doing many flat rate boxes, but your profit there is at least $1.05 to $2.05 as well.
But yeah, either don't be a jerk about other people's choices in running group buys and get off of the high horse, or actually walk the walk please. It really irritates me that you'd advertise this as "the white knight group buy that saves you from the tyranny of greedy group buy organizers"... who themselves are just as benevolent but just looking for something in exchange for their time.