I am quite certain they are all hoaxes. I'm also an avid eBay user and although I am not an expert what I have read is that there are several things to look for in a hoax.

1) The seller refuses to be contacted through Ebay's "ask seller a question". Instead they post a separate e-mail address. Why? because they hijacked the account and if you asked the seller a question it would all come crashing down so they go around eBay. That's why the feedback looks so good....because it's not really them!

or

2) When you contact them, they tell you they travel for work a lot so although it says Kansas they are really in Eastern Europe at the moment and have no access to Paypal. So they ask for a Western Union payment which is out of the scope of eBay. In most countries you don't need any proof of identity to pick up the money so it is sent to a fake name and the people take your money.

3) No photos of the box, just stock photos. They say that's because they don't have it yet but by the time you send the Western Union transfer, they will have it by then.

Just for fun I contacted 2 of these hoax sellers and following the script exactly, they did #1, #2, and #3 above.

Don't fall for it, these people are the scum of the earth and that's putting it mildly.