Ok so this one is not cheapskate, I'd say 'opportunist spender'
While vacationing in the UK I tried to stockpile aspirin. See, I got 7 boxes of 16 tablets each for 2.03£ (3.10$- 2.30), that's 0.19£ the aspirin! (you don't even need to figure that out, it's printed on the price tag
I probably couldn't find a box of 10 for that price here!
The only problem to my stockpiling scheme (we go through a lot of aspirin with my SO) is that you cannot buy more than 2 boxes (or 32 tablets) of pain killer per purchase in the UK, and I wasn't going to go multiple times with a different disguise so I just tried to go in a Boots (pharmacy and drugstore store that are everywhere in the UK) everytime it was convenient.
But yeah, the pharmacy and general drugstore prices could almost be attractive enough to think about doing a yearly trip just to stockpile on stuff.