Originally Posted by s fontinalis
international swappers only, including canada, should be able to either send cash or pay via paypal, of if the swap coordinator is willing to bite on the return shipping, then fine.
ALL USA swappers must pay shipping ahead of time. It speeds up the whole process.
I agree. That is what I've done in the past. Take your box of flies to the PO and buy an extra envelope, address it, have it weighed with the flies and attach the postage. Fold it up and put it inside the other and ship it off. It is no extra time to ship and certainly saves a lot of work on the other end.
Another very easy option that can be accomplished from home, use the USPS Flat Rate envelopes, you can purchase the postage online and print the label from home, tape it to the envelope and stick it in your mailbox.