I have bought an OEM NEW a/c compressor from these guys for an old Mercedes:

Air Conditioning Compressor from 1 Air Conditioning | Shop AC Compressor, Condenser, Evaporators and more

Their prices are unbeatable. For example, a NEW OEM compressor for my 01 4.4 would be $365! The bad news is that they say they are out of stock on your 03 3.0. I would try calling them however, as their prices are so cheap, and they are indeed legit.

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01 X5 4.4 (sold), 99 Toyota Land Cruiser, 08 Ram 1500 Quad cab 4wd 6-Speed Manual, 06 Prius, 12 Camry SE.

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