[capitainenemo]

I don't know about actual canadian prices, but I do visit canada periodically, and only once was I in a position to go through the complexity of acquiring a roaming SIM. My cost is 20¢ per megabyte.

The last time I was there for a week I made sure to exclusively use Firefox+NoScript and setup a number of large regions in google map caching - in past I also used Firefox data saver image option, but regrettably they removed that from the config (hm, I wonder if it's still available in about:config as a hidden option - shame they also blocked about:config unless you use a non-mozilla build)

(my suspicion is it was probably one of the many cool features lost in the rewrite)

There are still data limited cell plans in the US though. Quite a few sold by T-Mobile partner resellers as economy plans.