Golden that is if you were a seller.
One such book that went for outrageous prices was the 2nd Ed, Complete Book of Necromancers.
I had bought this book back in 1995 or so for the cover price. I held on to it and really enjoyed having it. Nothing makes for a great arch-villain like a necromancer. In early 2000 I sold it, along with a ton of my AD&D 2nd Ed. Material on eBay. I got $83 for that book alone. Not a bad deal really.
Since that time I have not really thought about that book much other than to gloat on making $65 profit on it. Sure there were times I wanted to flip through it again, but I had new 3rd Edition material to keep me busy.
Well yesterday at Half-Price books I found another copy. It was in very good condition and despite the name of the store it was going for $14.00. Sure they are not fetching much more than 40 on ebay these days either.
Well I own a copy again and happy to have it.
Reading through it I was caught up in the world of WP and NWP and THAC0 all over again, but the fluff is still great. Not sure I'll ever actually use it, but it is there now next to my 3e and 4e books of similar nature.