Peter Watts kindly provides his work online for free on his website, under the backlist section, under a Creative Commons Attribution – Noncommercial – Share Alike 2.5 Generic license.
Unfortunately, an eBay seller, e-bookkeeper_norwich, is fraudulently selling copies of Watts books in clear violation of both copyright and the non-commercial Creative Commons license, which is quite a feat of legal stupidity. ETA: These copies were not authorized by Peter Watts.
Do not buy from this guy, and report him to eBay.co.uk as much as possible.
Please spread the word.
Update: Peter Watts also posted about this, and the seller actually apologized in the comments and removed the item, as well as all the other copyright-infringing CD-roms and now sells club wear.