I made some calls and found some prices:
BMA
Thrust Arms w/750 bushings installed - $99 ea (lem)
Thrust Arms w/M5 bushings installed - $130 ea (lem)
STEVE HAYGOOD (prices include shipping)
Thrust Arms w/750 bushings installed - $71 ea (TRW)
Thrust Arms w/M5 bushings UNinstalled - $110 ea (lem)
If you have a press, sounds like Steve can give you a good deal on the M5 bushing set.