Stumbled across this while doing a search. You can purchase all kinds game stuff in PDF format. You have to register and then they send you a download link in an email (they will burn your "purchase" to a disk for an additional charge and mail it to you).
Very extensive WoTC/TSR library.
Including Chainmail, Gods Demigods & Heros, Eldrich Wizardry, Swords & Spells, Greyhawk, Blackmoor, Doc's Island, The Elixir of Life, The Forgotten King, The Egg of the Phoenix, To the Aid of Falx, pastel modules, a couple of the supermodules, old character and noncharacter record sheets, and even monster cards 
.
Almost all prices were $4.95 for the downloads. I believe the charge to burn the stuff to a disk was an additional $6.95. Didn't look like there were any fees to join.
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