Inspection I for my m3 was $1800.
Inspection II for my m3 was $3850.
perhaps the lessor engines are cheaper....
M's take funky 10W60 oil that's like $20/litre or so. They also call for valve adjustments with the Inspection 2. I'm around a grand cheaper than the dealer on M inspections.
Yes, that's 3M Scotchprint 1080.
As far as those repairs, I've listed the costs below, along with the actual time it takes to do the work. All of this is super-easy DIY stuff, and the most complicated part is not being afraid to dive in.
My shop labor rate is $100/hour.
DESCRIPTION: LIST PRICE FOR PART / MY COST ON PART / BOOK LABOR TIME / ACTUAL TIME IT TAKES ME
Valve cover gaskets: $46.50 / $20 / 1.8 / 15 minutes
You sometimes need to replace the grommets as well, they're my cost $0.82 each, retail is $2.21 each.
Oil pan gasket: $36.58 / $22.17 / 5.2 / 1.5 hours
VANOS oil line banjo bolt: $8.00 (two washers) / $2.00 / 1.5 / 3 minutes
CVCC: $175.13 / $127.04 / 3.8 / 45 minutes
Lower Control Arms (all 4 that go bad in the front): $868.99 / $388.08 / 8.0 including alignment / 1.5 hours including alignment
Expansion tank: $99.79 / $50.50 / 1.4 / 10 minutes
Power steering reservoir & reservoir hoses: $109.38 / $61.46 / 4.5 / 30 minutes - usually you can just get away with installing a screw-type clamp in place of the OEM earclamps; if it's been leaking for a while the hoses will be cracked and require replacement. I replaced mine anyways.
So there ya go, that's pretty much it. I usually sell parts at just above my cost, that way I can undercut the shit out of any other shop and the dealer, while still using OEM parts. You can get all these parts that I listed above from eBay or Rock Auto for sometimes even cheaper than my cost is on them; Rock Auto usually carries Meyle and Lemforder, who are acceptable substitutes for OEM (Meyle actually manufactures some OEM components for BMW and Mercedes).
Paint and bodywork, done at the standard that I do work at, would have cost a customer several thousand dollars; it could have been done 'cheaply' for well under a grand, including the cost of the bumper and headlight lenses. The audio stuff was just stuff that I shopped around online for and bought when I found what I wanted for the right price; same with the coilovers (I think I paid $115 from eBay for them); a lot of it was more elbow grease and 'time spent' rather than big dollars on expensive parts. You can find parts for these cars cheap ALL OVER the internet, it's just a matter of taking the time to look for 'em.