If it helps, I’ve had my mac eye primer for 5 years and it still works great. And powders rarely expire expect some very soft formulas. You can try to do a project pan to get more use out of all your products. Use a selection for three months and track progress (you can make marks on the packaging/take pictures so you get a visual that things are actually being used). After three months you can reevaluate, remove products you’re not that into and replace with others. I like to follow kitschsnitch’s project pan on YT (Kat from Beauty News. She has an insane amount of products but gets a lot of use out of them). Things don’t expire as quickly as they say on the packaging. I’m sure you’ll get a lot of use out of everything.