I call bull. Real home bakers (like me) have 50+ lbs of bread flour ($7 at Costco, no joke) in their pantry in food-grade containers and 2 lb containers of yeast ($5 at the restaurant supply store) in the freezer at all times. That's the most economical way to buy baking supplies: duh. I've actually felt a bit sorry for all the noobs wanting to get into baking because they finally have time and then finding those hilariously overpriced little packets of Fleischman's sold out.
I mean, if you want only organic flour, then yeah I can't help you. Sourdough? That would help with the yeast issue. Actually I have a cornucopia of wacky flours in my freezer, too, because sometimes I like to get creative with my bread. But the massive quantities of AP and bread flour are my staples. I do a LOT of baking. But in my opinion, anyone who wants to bake is welcome to flour! Baking is fun and cheap and everyone should do it!