The cost of postage, shipping materials, paypal fees for accepting the payment for postage, delivery confirmation, packaging, and handling are figured into the postage charge. We actually invested nearly 200.00 tonight to upgrade our shipping system which is not figured into our prices. The overhead on shipping (even free stuff) really ads up. We don't ship with stamps and envelopes but we do have a high success rate in terms of items arriving without damage or issues. =) Keep an eye out I have a few free shipping listings on here I wanted to do since I was just getting started and I plan on adding a few more later this week. Thanks for watching! Take care! =)