I hope this stuff isn't from ripoffEbay.
Hey! I'm an Ebay seller and so was Redrumloa (who you'll notice doesn't bother posting anymore).
Here's the trick with Ebay.
Check out the seller.
Has he had a fair number of transactions?
Is his feedback rating good?
Mine's 100% positive with over 400 feedback comments.
Next, and this is important, read the description.
If there are any qualifiers (like, hey no guarantees this is functional), don't buy it.
If the seller says its good, even if he's not offering to take returns you're covered.
Because you're going to pay with Paypal (created by the great Elon Musk - yeah the guy that runs Tesla Motors).
If you buy it and it doesn't match the description, contact the seller and file a complaint with Ebay.
If the seller doesn't offer you a fair resolution, Ebay will get you your money back (including the shipping).
After all, they own Paypal and can backcharge the Ahole.
Its that simple.
I've never had a bad transaction following these steps, because if I get screwed I get it all back (and I can keep the piece of crap and even leave negative feedback for the seller which he won't be able to retaliate about).
Like I said, simple.