I have already used this service a couple of times, bought gift cards to top up my mobile phone account. I recently found a very similar service. https://www.coinsbee.com/en/ They seem to offer gift cards that I can use even in the country where I live - Ukraine. This is very cool.
Tell me, has someone already used this service?
I will test it out and let you know, given they service Canada :)
Test it and it works