The movies Mercury plays are fantastic and diverse. Unfortunately, you have to buy a 4-movie pass to go and see them. This would be ok if the 4-movie pass didn't expire within the year!
I think they should change it so that the pass is valid for 2 years. We found it hard to see 4 movies within the year, because we didn't like all of their offerings. If you do the maths, our movies ended up costing a fair bit each.
Otherwise, Mercury is an AMAZING establishment.

very cheap tickets, and is licensed. the "foyer" has a bar, comfy couches and bean bags. This cinema doesn't usually show main stream movies.

Approximate cost: $12

I went to the Mercury recently for a series of free weekly low-budget film screenings but have also been for screenings during their Cinémathèque program, during the Fringe, and regular cinema releases. The chairs are very comfortable and on a good angle so your view is never blocked. The sound is also good for the smallish cinema. The foyer has comfortable funky chairs and bean bags and there is a small snack/drink bar where you can get alcoholic drinks also.