https://www.gamespot.com/articles/huge-final-fantasy-sale-on-steam-right-now/1100-6460107/

As part of the Steam Summer Sale that's going on now, the whole Final Fantasy franchise is available at a nice discount. In fact, nearly every game is half off, making this an excellent time to fill out your Steam library with some of the most popular and highly regarded RPGs of all time. Just make sure you buy the ones you want before July 5, when the sale ends.

The first two Final Fantasy games aren't on Steam, but entries III-VI are all on sale for $8 each, including the belated sequel Final Fantasy IV: The After Years. That's half off the usual prices for those games. Next up, we have Final Fantasy VII on sale for $6. This game brought the series to newfound popularity when it launched on the original PlayStation in 1997. Its PS One follow-up Final Fantasy VIII is also on sale for $6.