60-150 a week on marijuana, it varies so much because my use really varies a lot between like .8 of a gram to like more than 3 a day. Also the weight I have available to purchase at any given time affects it, because obviously smoking half an ounce in the week is a lot cheaper if I got an ounce at the start of the week than it is if I have to buy two quarters.
I drink probably 40-60 dollars worth of grog a week, basing that on a 30 dollar average 700mL bottle of 40% bourbon or whisky.
15-30 bucks on codeine CWE.
I take a decent whack of benzo's but they are mostly scripted and I get each prescription for like 6 bucks, so in the scheme.
If I use drugs like meth, heroin, or whatever else, then obviously it bumps up my weekly spend quite a bit. Lately I have done an OK job at not indulging in the more costly drugs. Even sticking to the cheaper ones though I manage to plow through a lot of money.