I saved a good chunk of cash at Western Plastics in the NE. They carry the stuff that the regular building supply places do and do not. They have quality stuff like Spears valves and Shed 80 Bulkheads. I also found the JG's there.
Location; not sure without a map, but approx 200-300m south of the Royal Bank on 32 Ave N and 12 ST E. Sales door on east side of bldg.
Open weekdays only I think.
I rate them
kari