If to replace guides and other sundries whilst on there, I'd budget $1600 or so for parts, max $2k in labour. The below is what I went through

http://www.bimmerforums.com/forum/sh...on-is-on/page2

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2002 X5 4.6 IS (Imola on black)
2001 740i M-sport (Alpine on black)
2000 540it M-sport (Titanium on grey)
1995 540i/6 (Hellrotted like a MMM)