I also remember seeing these ads when I was shopping for my Switchback.  Fortunately for me I didn't get caught up in this scam.  I did purchase my Swithcback from an Ebay auction.  It came with arrows, sight, loop etc...  With shipping I paid right at $855.  Because I bought this item on line I voided the warranty on this item.  I priced out this bow brand new at my local Mathews dealer and figured in the accessories I also purchased through Ebay and would have only been out maybe $20 more dollars if I were to buy a brand new equivilant.  Moral being is it really worth taking the risk of being scammed when making that purchase on an item you probably never thought you'd make and oops its a scam?  You are losing the warranty anyway.  Man the extra if any is insurance your dream purchase doesn't turn into a nightmare.

Happy Hunting!!