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Just a thought, I could be wrong though...I import bike parts and when somebody asks me if it is easy, I tell them it's not. I would tell them about the technicalities to discourage them into importing also as I'm just inviting competitors to my business! Do you think these guys are just doing the same?

@TheRaven: you should consider checking out Garbaruk's 10-50 (coming out soon) 11 speed cassette! At about $250, you get a cassette that's built like the xx1 plus a modified derailleur cage. Right now their 11-50 cassette is available for ordering and it weighs only 299 grams!

Is this the same freehub design as Oneup's? Oneup said - "OneUp has collaborated with Hope Technology on developing a non-proprietary, freehub body standard that accepts a 10T sprocket" - If this is so, why didn't Hope make stamped steel cogs on aluminum spider carriers to cut the cost and make it affordable? In my opinion, if hub and cassette makers accept this new hub standard, it would be cheaper to make cassettes with a 10t small sprocket. It's a bit of hit and miss with Hope. They did a good job with going with 10-44 making it better with a lower gear compared with SRAM. A miss because any converts are stuck with Hope when they need to replace their worn out cassettes. I assume that the Hope cassette will wear out faster because the 3 big sprockets are aluminum. Although the cassette is cheaper compared with SRAM, it will seem more practical to stick with the more durable SRAM.

Yes.. The new slx rd will work perfectly on your 10speed..

Ever heard of Box components? Maybe they're what you're looking for! http://www.bikemag.com/gear/box-components-launches-mtb-parts/

Absolute black makes a 13t lockring so you can put back your 17 and have a 13-42 cassette!

42/13 ratio is 3.2 and 36/11 is also 3.2. So they're basically the same. You might as well save money and just get a smaller chainring.