You can convert old 10 speeds for much less than that, I'd say do it yourself, cheaper and much more satisfying.
@Booga started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
You can convert old 10 speeds for much less than that, I'd say do it yourself, cheaper and much more satisfying.