The only site with speedball and sup'air is Panther Paintball in Surrey.
They usually have compressed air there every weekend. But it helps to phone in advance to make sure. Their phone number is 1-866-533-0890.
Unfortunately, Panther is Field Paint Only. They sell Blaze at around CDN $160. If you happen to catch a practice on selected Sundays, they sell it for $85. If you help set up and take down the sup'air field, they waive your field fee/rental costs.
If you want to know more, check out their website here: Panther Paintball