I have never been able to find any for sale north of the border.
Not sure why but all I can find is:
White Lightning™ (W)
Blue Thunder™ (T)
Black Jack™ (J) and Black Max™ (FJ)
Mojave Green™ (G)
Super Thunder™ (ST)
No Warp 9, Metalstorm, or Dark Matter?
For that we have CTI VMAX and Skidmark as alternatives I suppose.
It costs a bit of money to have NRcan ERD add a propellant/motor to the list so if Aerotech doesn't feel there is enough of a market and you don't want to pay the thousands required then it ain't gonna happen. Estes C11 and Es were illegal in Canada for a while for that reason.
Richard's statement is correct, it costs Aerotech quite a lot of capital to have products Authorized for sale in Canada, so lack of Dark Matter or other propellants are likely a financial/marketing decision. The Canadian High Power market is only a few hundred individuals, the model side, several thousand a small fraction of the United States. California likely has several multiples more High-Power enthusiasts than all of Canada, so you see a much greater selection available to Californian Tripoli/NAR members.
Got word back from ERD - Dark matter propellent is currently not approved for sale in Canada. However it is allowed under special permit for testing purposes. ERD in consultation with AeroTech and its Canadian distributor are currently in the testing phase.
Got a chance to try those metal storm motors in our school launch the other day! It was outstanding fun. Our local fire department has stated that as long as the ground moisture is high - no need to worry. Launch all you like! Last week of April all rocket activities are stopped as soon as the fire risk increases. Pretty much common sense regulations.