i just picked up a 5955tg from an ebay seller (store) that has them for $89! i think he still has that sale going for a few more days, too.
for those that have the 5955, do you notice it 'beep' a lot? the instructions say it's normal and that the servo is just trying to center itself (it happens mostly under load), but it's soooo noisy! esp. compared to my old 645mg.
edit:
here is the ebay listing. he has crappy feedback score (98%, not bad, but not perfect either) but i got my servo within a few days.