I don't think the DX pricing is a reliable one. Internet rule #1 - if it's too good to be true, it probably is (also known as the dating sites rule).
If I were you, I'd just suck up the "overpricing" and order one from dinodirect, foxoffer or willgoo (in that order, by price). Remember that at launch, the price of it was $170 - and most stores offer a similar price. Only DX is a third of it, and no one has received their device, though something is in the mail.
Also, remember that customer service is essential - some devices have flaws, as with all products. You'd want to have someone to talk to, and from my experience, willgoo is the best. They've even sent me a replacement charger (and I believe even a pouch, currently stuck in customs).