If you've ever had to do a website for a small biz, you typically find that either a) you end up doing the copy or b) the site never gets finished (and you don't get paid, or if you do get paid, you get to put an empty site in your portfolio). Good copy-writing is thus very handy skill to have (and this guy, in his eBay listing at least, absolutely nails it... the £9k bottom line speaks for itself).
Truer words were never spoken. "What's that, you expect me to produce 40 pages of technical-but-intelligible copy for procedures on your plastic surgery website? But that's why I gave you [insert CMS of choice here], so your people could log in and edit that themselves...my god man, I'm a web developer, not a medical research technician...what's that? You don't have people? Sigh."