When I did mine almost 3 years back, parts without flywheel were right at $1k; LN Bearing Kit ~$600, Sachs Clutch, PP, TOB $330 Ebay, RMS $20, Assorted sealants / stuff ~ $50. Here is my write-up:
PLEASE NOTE: LOCK THE CAMS
IMS, RMS, Tranny R & R Tips - 986 Series (Boxster, Boxster S) - RennTech.org Forums