yeah they do make it up on the spot, i'm sure of it.
I've bought two pairs of wheels from Coloredtuffs and got stung £30 or so. Some stuff from Ginny, a tenth of the size and weight of the wheels, cost me £28. Frame and forks cost £21. I've even used the 'code' that was mentioned in another thread and it was bugger all use.
Go figure.
HRD