It sort of makes sense as there are regular consumables like blades and shaving gumpf.
That said, I bought about 5 million old fashioned double-edged blades back when I used to shave every day (and they'd last a month then), so now I've a Beard of Authority℠ each lasts about six months. On that basis, I'm set for this life, the next, and the one after that. Unless I come back as a cockroach, in which case I won't bother shaving.