Damn, when will the out of stock reloading components end! I want to get in to reloading at some point.
The supply is there. The availability is tough. Meaning I've been watching and had the opportunity to buy primers, Powder and brass in the last few weeks especially.
I would reccomend to do some research based on what your reloading and buy the "go-to" if you will powder. H4350, varget, n570, 4064 etc.
And buy in bulk, which is the hardest part. A big part of reloading is the cost savings, however with buying in bulk up front your not going to realize that savings for months or years depending on how deep down the rabbit hole you go.
Good luck.