I've never bought a stand on e-bay but I've bought a lot of things and generally you too many problems if the seller has a good and lengthy history of positive feedback. Sometimes even the best sounding sellers can burn you though, I got burned on a transaction last year on a christmas gift and the seller had a great rating. I now will only pay through paypal, if they will only accept cash or a money order I'll pass on the deal.

One thing to keep in mind to is the shipping they charge you. Especially on an item as bulky as a treestand you need to make sure they don't overcharge you on shipping. Sometimes they will post how much they charge, other times they will just say "buyer pays shipping costs". I'd find out where they are shipping from and check on the UPS website what the shipping charge should be. I've had people trying to charge me more than twice the actual postage before.