I'm sure that my time is coming to get ripped off, but the few things I've sold over the Internet have been to individuals I "cyber-know" on various forums. I've shipped Reese rails, power/heated mirrors, a Flex-a-Lite dual puller cooling fan assembly, etc. to individuals and told them, "If it's what you're looking for, pay me. If not, ship it back." I've always been paid - so far.
Of course, I'm old enough to remember that, when I was a kid, we didn't even lock our house when we went on vacation, either.
Rusty