I bought a book from them (had some money sitting in my Paypal account, which they can take). Pretty damn fast... you pay for the ebook with paypal, download the book, and voila it's on your PC. Superb.
The image scans are sufficiently clear - they could be a bit better, but it's good enough to read. The book I picked was the Shadow Players Guide for Wraith:The Oblivion (9 dollars+instant delivery there, or 45 dollars+postage+"wait til it gets here from the US" from the one online FLGS I found it at). No prizes to guess why I went for the eBook! This is one of those weird books with white text on black background and so the scan is probably unusually difficult to read, but I can manage. The normal black text on white background stuff prints out just fine though on the scanned image books and is perfectly legible. Be warned that these "scanned image" books are likely to be several tens of Megabytes in size though.
Wow. If this catches on and they get more stuff in, I may never go to an FLGS again...!