I should have skipped my US Navy helicopter certification and PE engineer license and gone into stone-age MB mechanics. I could retire by Tuesday.

Labor:
What is the shop rate, $750/hr?
Air Filter/mounts 0.25 hr
Oil filter ?
Oil pan? For brownie pan maybe 0.5 hr. For main aluminum casting and pan much more--rarely the issue.
Steering damper and control link maybe 0.75 hr.
R&R engine and trans wtf???


Parts:
Air filter mounts are $2 from Uro or $6 from MB.

Oil filter is $10 from aftermarket (Mahle, etc) or $15 from MB.

You can't pay $9 for oil even from Redline.

The oil pan is about $20. It's basically a brownie pan.

There's only one transmission mount, and it's about $15.

There are two engine mounts, and they're about $20.

YMMV.

__________________
James Marriott
2003 Buick Regal
1983 300D (228k, frau Auto)
1996 Suburban K2500 (192k, 6.5 turbo diesel/4WD towmaster 10,000)
www.engineeringworks.biz
1987 300SDL junker 170k
1982 300SD junker, 265k

From the looks of the parts prices, it looks like marketing is the place to be, not mechanics. I would like to sell a few truckloads of transmission mounts for $214 each!!! Not to mention a few oil pan gaskets at $48.50.