Honestly the main thing I'm getting from this thread is that some of you are long resting ridiculously often.
These potions are abundant.
You can give your martial character(s) free 21 strength every long rest and get all the way from start through act 2, if not also all the way through act 3, without ever buying a single potion.
I mean, sure, I could probably finish the entire game only with autoattack and cantrips, if I hated fun and tried hard enough.
I went through the entirety of EA without even "discovering" Astarion was a vampire spawn, once.