You want include stretcher or just a canvas? If include stretcher can order at art frame shop in wangsa maju. This framer is well known among artist to do custom framing for art. Knows how to handle art piece and all. Nearby to balai polis wangsa maju, Art Field.

If just the canvas i suggest you go to Premier Art in Publika. Register as member for discount, and say that you're an artist to get extra more discount.