See if there’s a homebrew club in your area that runs bulk buys, you can drop your per-batch price by a fair amount with buying ingredients in bulk. Un-milled grains last a long time if stored properly, hops can be stored in the freezer and I’ve used them up to a year after opening without a significant drop in quality. Same goes for yeast if you get dry. I have a 500g bag of US-04 that is over a year old and still ferments just fine, I transferred it to a mason jar and keep it in the coldest part of my fridge. I was able to drop my per-batch cost to around $20 CAD or less for most beers that I brew, and having the ingredients on-hand means I can brew whenever I feel like it.