This place seems to get a bunch of movies that the other Cinemas do not carry. However, from the outside, it always appears to be sort of a dump....

Is it as nice as Major Cineplex or Emporium?

Indeed it does, and many of those movies are well worth watching. I frequent the place quite a lot.

While it is not as nice as Major or Emporium, it's still okay for for what it is. I've never felt the place was filthy or tattered- just quaintly run down, like so many other venues in Bangers.

Keep yourself informed what's showing here: Apex-Siam

I think most of the old flea pits have been closed, so you should be OK.

While all cinemas in Thailand are cheap - are some cheaper than others?

I recall a friend telling me that Apex Lido was cheaper as was some other cinemas?

Cheers!