I just think the way they offer backorders is rather deceptive. Sure, if you take the time to look, you'll find the stipulations of the backorder, but even they aren't clear. It states that "If the name you are interested in has gone to auction at The Domain Name Aftermarket, the $18.99 cost will be used to place the opening bid on the name." But it doesn't state what the conditions for it going to auction are or that all domains go to auction...
Also, in order to buy through TDNAM you have to have a membership, which is another $4.99 you may not have been aware of at the time of placing the backorder.