A night out getting drunk usually costs me £70-100.
An 1/8th of half decent coke for the night runs up to ~£60, if you know the right guy (more if you don't, less if you want to snort sawdust).
A draw of skunk is about £25, twice that if you want the best stuff, and it depends on your tolerances but I wouldn't have said it'd last most regular smokers 24 hours (thats 24 hours stoned, not 24 hours where you're at work or asleep for 16 of it).
Tbh, anime still sounds cheaper to me, unless you're one of those fanboys who seeks out the rare hentai crap and then buys the figurine for good measure. I don't think I've spent more than £30 on a season...