I have bought and sold several items on EBAY with no problems so far. Check the seller's feedback and ratings. As a matter of fact a large successful pro shop in my area is now selling brand new Summit stands at good prices. I know the shop well and all items they sell is brand new factory items in the box! Most of the advertised new stands are from dealers and some are not online only sellers, just as in my example above. Coincidentally, I recently purchased a stand from the classified section here and was completely satisfied.

I do have one rule of thumb whether buying anything used or new on EBAY, I feel more at ease buying from a seller who includes pictures of the item. It all boils down to knowing the item you are interested in, checking and emailing the seller with questions, and knowing what the item sells for locally.