7 inch screen with built in graphics on USB

Not purchased one of these, but just found on the scan site for under £85. Sounds very interesting, can see this being useful for annunciator panels, radio stacks, or GPS type roles in my sim if it works.

Seriously considering one if I get some cash for Christmas. I saw another thread mention these, but that link showed them only in Korea, looks like they are now escaping and available to wider world:

http://www.scan.co.uk/product.aspx?ProductId=27489

Has anyone used a USB monitor, or even this one and found them any good?