In belize City there are a couple of places, Angelus Press is one, and the other is the huge purple building that sells all kinds of stuff up the street from Belize Diesel, cannot remember the name right now.
Again what are you looking for..I in the last 8 years in my business..I do my own prints..need computer stuff..paint originals..need canvas..make my own like most local artist..the artist paints are expensive..better ways around that..good brushes can be found in the strangest places...Artist have been producing art here for along time without going to Angelus press..thank god that they are here to supply what cant be bought elsewhere..P.M. me if you want to talk about art supplies....
LONELY PLANET SAYS TOURIST LOVE OUR ART. BEST PRICES ON ART.
A very rough canvas that is used by many artists can be bought at either Liberty store or Simon Quan in Belize City. Most if not all of the art supplies I've seen in stores in Belize has been student grade and not good quality at all. I've seen artists use regular latex house paint or chinalak for lack of anyting else. I have had the best success with purchasing supplies online on websites like dickblick.com and having it delivered to someone coming down.