Generally, I don't buy games over $18 CAD. I've made exceptions (Temtem, Civ 6, Super Mega Baseball 3, My Time at Portia, Satisfactory, a couple of others) but never paid more than $40 unless it's a gift for someone I really like (I pre-ordered Fallout 4 for my ex for her birthday).
I will happily wait years for something to come down in price. I have 600+ games on Steam: I always have other options.