Fortunately, price info is actually tracked! If you use the SteamDB browser extension you can see the historical low price right on a game’s product page on Steam.

For example, Terraria is on sale for it’s 2 year low price of $4.99, but the lowest it’s ever been is $1.99 (a little over ten years ago).

Not the person you’re replying to, but for my own POV:

I think the new Dune movies are the best they could be and I’m glad I was able to catch them in theaters, but they’ve also convinced me that Dune just isn’t a franchise I’ll ever be interested in. I’m not sure if I’d bother with the third movie, and any spin-offs are also fully out of the question for me.