Mouser has 30 different choices, all available in single quantity (although for some of the choices you can buy 10 for almost as little as one costs). There will be a shipping charge if you only order one, the unit costs of the 30 choices are all under a dollar, with some being around a dime. Total bill will be a few dollars, less than you spent on subway fares or gas looking in local shops. My experience, domestic US, is that delivery is a couple of days by a low cost shipping method. I don't know how customs and international affects this, but it shouldn't be too long to Montreal.
Digikey and several other large distributors deal with small quantities regularly. They don't know if you are a hobbiest, a nuclear repair shop, or an engineer prototyping something that will be ordered in million quantities. I suggested Mouser first because I have had the best overall experience with them, but others have their own preferences. They are all good.