I just happened to be doing a quick search on eBay yesterday for A/C compressors. I had mentioned to a friend that one of my lingering problems to solve is a very herky jerky idle with the A/C on (but smooth when up to speed or when in Park/Neutral), and he said it sounds like the compressor and that he was quoted $600+ on his car. I thought that sounded way too high, so I went a searchin'... I saw 1UZ rebuilds for $150 or so, but I didn't look very closely at brand, warranty, etc. I imagine if you can find one for the 2JZGTE, it would be in that same price range.
'94 SC400: Goodkat ... "It's not something people hear about. Falls on deaf ears mostly. This particular one has been over twenty years in the making."