My first criteria for purchasing RPG stuff is that 99% of it has to be digital. I do not want more minis, maps, books, or anything else that I have to find a place to put it. If it doesn't store on my hard drive, I don't want it. (The last physical thing, only thing in several years, is a poster map of the Frontier for Star Frontiers. And its in storage.) Since my digital tool of choice is Fantasy Grounds, almost everything I buy is a FG product/module.
90% of what I buy has to be something I am actually going to use.
10% I buy because I want to support the creator.
80% of what I buy is products from the FG Store (85% of that is D&D 5E products)
15% of what I buy is from the DMsGuild.
5% of what I "buy" is Patreon support.
* All numbers rough estimates.