I payed $250 for the screening last night (and was second in line) but the guy who was first spent over $500 American to come to Washington DC from Canada to see it.
As for any more spending, I can't say how much i'll do. I'm already going to see it at least 2 more times on the 19th, and i'm willing to bet i'll see it a handful more after that. Now, since everybody seems to be including costume prices, mine has cost me just under $400 I guess. I like to call it low-budget, and it might actually be, but I guess $400 doesn't seem like it's low budget!
so far, I've bought tickets (me and my brother) for 3 screenings: midnite, 10:40 and 4:20, if I can i'd get tickets for 1:30 and 9:00 pm, then I'll see it saturday and a friend of mine gotme free tickets fo sunday mornig, so so far I'd say I'll see the movie at least 5 times the first week, that'll be like 30 $ (pretty cheap, don't you think?)