If you're after an original XT M739 4 arm outer, I've got one in nearly new condition that I don't really mind letting go of.
I converted my M739's to a 5 arm spider shortly after I bought them BITD. Back then I didn't really like the look of this new fangled 4 arm malarkey.
Besides which, Pace only made 5 arm rings at the time, and I simply had to have Pace chainrings...
As a result it's had very little use and has been wrapped up in the spares box for the last 10 years. As you can see from the pictures it's almost as good as new.
How does £35 posted sound?