I'm seeing Ep 3 tomorrow for $5.50. Matinees are your friend, cheaper, usually less crowded, and especially handy for movies with a big kid draw like HP because usually the kiddies are still in school.
What city?
I haven't been to anything but matinees in years. You can get in for $4.75 at an 8 screen theatre next to where I live. I'm going to splurge tommorrow and go to the big digital screen theatre downtown to see Sith. Just $6.75 there.