Prices (very) roughly, for standard bikes I would say:
MC21R £800~£1500
MC21SE £1300~£2200
MC21SP £1700~£2500
MC28's generally start about £1000 higher than the equivalent MC21.
SP's always fetch a premium, although an SE with Magteks, or an R with a dry clutch and Magteks is an identical bike! All the motors are the same, all the ignitions are the same, pretty much everything is the same!
All MC21's will make 60~62hp with a soldering iron and a 20mm hole cutter, providing the motor is in good nick. Fenton's totally standard MC21R was dyno'd "before-and-after" last summer, and gained a free 16hp in less than 10 minutes!
I thought I had graphs of Fenton's 21R pre and post-op', but I can't find them. StephenRC45 will probably post them if you ask him nicely, and then I'll do a composite of them!

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Andy.
NSR-WORLD.COM
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