In Canada, the only real exchange for us is the Canadian Virtual Exchange (caVirtex). However, a year ago they raised their BTC trading fees from 0.5% to 3% (2.5% if you have 100BTC transaction in the last 120 days, 2% if you have 300 BTC transactions, etc) based on dodgy basis (to supposedly cover their fees for trying to establish with the government laws/paperwork). So us, Canadian, really get stealing fees.
So, it's really bad for trading, especially if you want to buy and sell later (or the inverse) and make profit. You basically can't do short term trading since this need BTC to fluctuate like 5~10 points for any profit to be made.
Most other exchanges have like 0.X% fees. Mt. Gox base fee is 0.6%.
Now that they (Gox) are coming to North America, and promise easy trading for Canadians too (even if in USD), caVirtex will eat their shirt
![Grin](https://bitcointalk.org/Smileys/default/grin.gif)
... finally...