Many have wondered what a Complete Set (maybe this is a complete set) of Printed 123, 617.52 manuals would sell for. The below sold on Ebay for $303.62 for the lot.
Description:
Complete set of genuine Mercedes-Benz factory service manuals. Includes Chassis and Body Series 123 volume 1, Chassis and Body Series 123 volume 2, Heating Air Conditioning and Climate Control Model 123, Engine Service Manual Turbo Diesel 617.95, Electrical Trouble Shooting Manual 123 '82 on. Plus, Illustrated Parts Catalog. This is ALL five service books that were made for the 300D, plus the illustrated parts book, (shows exploded views of all parts). I bought these from Mercedes-Benz for my car and never used them. They are still in the original box as shipped from factory. These books will cover the 1982 to 1985 Mercedes 300D Turbo Diesel. These books are now out of print and rare. If you have a classic 300D this is a must have set.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=270384577997&sspagename=STRK%3AMEDWX%3AIT&viewitem=
My highest guess was they would sell for around $250.