Thanks, Zeogold! I understand completely.
Since it was recommended, is Hand of Fate acceptable? It's about $32 iirc, not sure where you want to draw the line.
I don't think the line is base price as much as rarity. HoF one has been in a few bundles, so has already made several appearances in the GA and will likely cycle back.
Civ VI, otoh, might only make that one appearance for the next 2-3 years.
But the base price on HoF is around $20, HoF 2 is $30 (U.S.)