Nothing is wrong with it, it´s a great piece of hardware. The F200 has additional a touch-screen, a Digital Pad, a new soundchip for better Audio quality and it sadly lost it´s network chip (So you just can have network access to it over the separately available (more or less) "Cradle").

Even on the official german shop (where i bought it) forums they were very surprised, even the seller himself! And he is in good contact with GPH (Game Park Holdings). Now they figured out that GPH is secretly producing a new handheld-console and stopped producing and shipping the F-200´s.

The best with the GP2X is that you can use 2 standard AA Batteries (and not being locked on company-specific stuff), it has a SD-Card slot (same here) and there is a great and big community who still program/port great games for it and you can download them for free!

But i don´t know how much they are by now, maybe you´ll have to wait until the successor comes out and is free of bugs. :/