If it's a game that I'm really anticipating, then I will buy it near launch and pay full price. There aren't too many games like that anymore, so I usually wait for a discount. I also pay full price if there is a physical copy of a game I want with a low print run (e.g. from Limited Run Games). This year I paid full price for Age of Calamity and bought Animal Crossing for my daughter at full price. Everything else was at a discount/used.
Bonus: I spent about $300-$400 on games alone this year.