I'm selling a SRAM X9 (X-9) 10 speed short cage rear mech.
I've had this mech on my bike since March this year, and it's only being replaced due to upgrading to a new Zee clutch mech.
As you'll see from the pictures, it bears the usual scratches of a bike part that's been used, but works perfectly and has never been bashed. Shifting is still nice and crisp, springs are good & tight, and I've just regreased the jockey wheels too, so they spin nice and smoothly.
It's also listed on eBay at £30 plus P&P - happy to do it for £30 inc postage or a sensible offer.