Most economical way to drink every day

I have anxiety and I self medicate with alcohol because none of the prescriptions seem to work, and weed only makes it worse. Usually no more than 3-4 standard drinks a day, which has been a consistent baseline for several years now. I don’t get drunk, I just get by. I know this isnt healthy, but it’s what I’ve got and it works for me. The problem is, buying a few beers or seltzers a day isnt very cost effective.

Please give me your suggestions on how to maintain my regular baseline without spending so much.

Again, I know it’s not healthy and I don’t give a shit. You’re free to pass judgement but quitting is not an option so please don’t bother suggesting it.

TIA <3