Don't buy from anyone who does not offer a 30 day money back guarantee. It's standard practice today and part of having someone buy something on someone else recommendation that can't be bought locally.

Without the 30 day return clause, maybe many things that get sold today to happy customers would not happen, when buying sight unseen.

If you don't care about a 30 day return clause, shop ebay. You can take a chance there and might save some money. I'd rather buy new with a waranty and the thirty day return policy. Why not have your cake and eat it to if the opportunity presents itself.