What three manuals? For what car? A complete set of the four manuals - Engine, Chassis and Body, Automatic Climate Control, Electrical Troubleshooting Manual for the 123 cars sold for over $500 on E-Bay a couple of weeks ago. Of course the variations in supply and demand change all the time but this price was high but not overly so in that market.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=1823092443