Not very good selection, if anything at all, at a much higher price for the most part too. Thankfully I'm 5 minutes from Detroit.( Not too many people say that anymore) My big machine purchases are from USA with the Ontario taxes added at the border I still usually end up saving 15%-30%.They really stick you Cannucks with high sales tax.
This also applies to lots of other hobby stuff. I bought a Gibson Les Paul at Guitar Center for over $1000 less than the before taxes price up here. My wife's different hobbies its the same story for selection and price.
Rod may get better selection in TO but I bet the price issue is the same.