Two things;
1) Shipping. This community is an international one. I run a company that ships items all over the world every day and you would be shocked at how much it costs to ship items. You should figure around $75 to ship which will include the cost of the box, tape, label(s), 5 copies of the packing slip affixed to the exterior of the box inside a resealable plastic pouch, gas to get to the post office, time to wait in line at the post office and finally, insurance on the item (if available).
2) In the unlikely event not enough tickets are sold, how will you handle the "unused" funds?
Thank you.