Recently I had to replace the AC compressor as the car was out of warranty. After finding out it was £1500 from lotus I managed to identify the eact Toyota/Denso part number and find a more affordable replacement. The details are below. Im from England but you American guys should be able to get one a little easier though.
Lotus Part Number A132E6349S
Toyota/DENSO Part Number 8832042120
UAC Part number UAC CO 10856C
FROM A USA TOYOTA RAV 4 3.5L V6 2006-2012
The non oem one was $160 + p&p + duty, in all £240 (off USA Ebay). The lotus unit is £1500!