The award winning Wizardry dungeon crawler franchise is on sale up to 85% off at GOG, DRM-free. Specifically, you can get 6, 7 and 8 for CND$ 3.48 (presumably less than USD$3)
https://www.gog.com/en/game/wizardry_6_7
https://www.gog.com/en/game/wizardry_8
