You've been done Brett - they are only $20 from Speedgoat! Converted into pounds and allowing for the fact stuff is cheaper over there that's about £15. £28 does sound alot really, more than Chris King ones.
http://www.speedgoat.com/product.asp?pa ... &brand=245
But sounds like you got a good deal on the Dura-Ace.
For Surly hub, it is $70 on Speedgoat so I would guess around £50 in Brixton? I can ask tomorrow night if you want, it's on my way.