I didn't go into the non-functional ads earlier, but I see now that the error on them is drive related. So as Rich86 says, they will probably not help you. And on 2 of the ads it is not even an A3 that is on the picture. If you come across a 3rd gen player with the Welcome bug, that would be much better. Or a fully operational player.
Btw, the Toshiba HD-D3 also has the DAV-RB722 drive. As I understand it, the D3 is the same as A3 just a special model name for the units sold through Tesco.