They have "Visitors to Canada" group health insurance that
you may consider.
The prices are about the same and are about $2/day for each person for emergency medical. You can read more details on their plans on their website or talk to them directly.
You can buy as many days as you need and as long as it is still active, you can extend the coverage period or you can request an early termination refund (there is a $20 or something processing
fee for early termination).
The last time I dealt with either one of them, TIC Insurance includes
accidental death and dismemberment insurance which may benefit you as well.