Are these wheels good value?

I considered something like this, but on the basis of comments in another thread, opted to get a pair of One On track hubs (£35 inc p&p for both), which I'll get built up with a pair of Mavic Open Sport rims (£21.99 each). With the build it will come to a bit more than these, but hopefully should be better quality. That said, I'm no expert.

Hubs are here: http://www.on-one-shop.co.uk/acatalog/Rear.html
Rims are here: http://www.chainreactioncycles.com/Models.aspx?ModelID=17148

don't forget spokes, and rims tape (or cheap electric tape will do), and if you can build it, spare a tenner for a bloke here to do it for you.