On: The tiny chip that powers Montreal subway tickets

[iamjackg]

You should read footnote #2. You can get an Opus card, which is reloadable: https://en.wikipedia.org/wiki/Opus_card

I couldn't find any data on usage for one vs. the other, hopefully it's not a crazy amount. I'd imagine that most people who use transit on a regular basis do not use single-use tickets.