or cost 99 cents plus shipping on e-bay where I recently purchased the 1st Edition Monster Manuel 2 and the Fiend Folio for 99 cents each plus shipping. So, I got both the these books for about $3.00 each.
Secondly, I offer the plethora of free pdf material available for rpgs of all types. Old school, new school, retro school, flight school, you name it and there's a free pdf, some where, on the entree'-net for your game.
One of the best free items I've gotten lately only cost a book of stamps and I don't think I sent a full book either. This is a little 'zine by Christian of Destinations Unknown titled One Square Equals Five Feet. The mag is one hand written page and always contains a new area for a 2nd Ed. AD&D solo adventure. I haven't started playing the adventure yet but I haven't read the separate parts, thus spoiling the fun for myself, either. I intend to make a fighter soon and begin his adventures in the 1  = 5' dungeon. I'll post the results here for everyone to follow.
The issue of 1 = 5' that I received this week had two other contributions in the same envelope. The original 'zine was enjoyable but now I'm three times as inspired to hack out one page of nonsense and send it off to join these other publications, it will not be content for Encounter Critical either. Surprise!