Baldurs Gate 1 and 2 available via Fanatical for about $4 - $5. Redeems through Steam. This is a good deal on old school D&D with plenty of world lore
https://www.fanatical.com/en/bundle/baldurs-gate-i-and-ii-pack
Discussion
You can get them on GOG.com for super cheap sometimes. They are DRM free if you get them from there.
They have a steam-like client too: https://www.gog.com/galaxy
DRM free is hella good