To be honest, I have not had a drink at a bar in a over a year... Roughly last year, it was about 5-10 dollars per beer at the club. Yes prices does vary from bar to bar. I think mix drinks are btw 8-15 dollar.
Beer at the supermarket is cheap, I guess: roughly $0.75 to $1.50 per bottle if you buy a case of 6+. Gas is roughly $2.00 a gallon which is cheap compared to UK / france. Cali is a little cheaper than London, about 10-15% cheaper in most city.