I have a pretty damn good way off getting drunk cheaply, Every time i'm in tescos i do a look about to see what is on offer, then whatever is great value a stock up on
Example is 3 weeks ago any 6 bottles of wine were 25% off, so i went for the 2 bottles for £5 deal as well, and so got 6 bottles for like £11
Also i found a glitch in the computers at tesco which was instead of 3 crates of Corona being £25 they were coming up as £11 on the self serve machines, so I bought 12 crates of it for uni, should last me a while