I bought my rear end (nearly identical to pic) used from my LHS for $100 after bugging them for 6 months to lower there $250 asking price. They recently got another one but they want $250 for it also, I've been bugging them for that one also but they've only had it for a couple months.
I plan to use them for a solid axle 4WD Off Road project eventually but
if $250 fits your price range, I'll see if it still there this weekend.