For fantasy-based stuff I'd usually point people at OSRIC or other OSR variants of D&D retro-clones. Most are unabashedly based on 1st edition D&D and AD&D and intended for people that want to play as such.

EDIT: It's also worth noting that I regularly check up on the Bundle of Holding deal page as they frequently sell packs of older rule sets in bundles for prices that are a steal. Granted, it's all PDFs, but you can also tie that to your DriveThruRPG account and get official copies stashed there as well as on your BoH account. You have to be willing to pull the trigger, though, because once they run a bundle on a game you likely won't see it again for several years.

For fantasy-based stuff I'd usually point people at OSRIC or other OSR variants of D&D retro-clones. Most are unabashedly based on 1st edition D&D and AD&D and intended for people that want to play as such.