I was horrified at the price of replacing the drivetrain on my bike. But a bit of searching and I came up with these.
http://www.rjcx-treme.co.uk/acatalog/copy_of_MIDDLEBURN_4_ARM_XTR_960_RINGS.html
I needed the m960 ones and the took of £7.20 at the checkout total £64.80. I saw a used set go for £56 on ebay ????.
Good old merlin next
http://www.merlincycles.co.uk/mountain-bike-cassettes/xt-760-cassette-11-34.html
Finally crc.
http://www.chainreactioncycles.com/Models.aspx?ModelID=33931
Not bad all in for £105 considering A shimano outer ring is about £100