Good idea, I live in Toronto. So I'm kinda close
Some people think that the U.S gives a better discount they dont realize that you have to pay in USD not CAD
Why not buy from some place in Canada?
Things are much cheaper in the states than they are here (in Canada). Our dollar is near par yet prices are not. This is a definite fact.
I've ordered a few products from the states and have only been charged when it's been shipped via UPS or FEDX. Avoid them if you can.
I don't know how close to the border you are, but there are companies that you can ship your package to right across the line that will charge you a $5 fee and you can just go there and pickup your package. You would save on shipping and you can just go grab your product and bring it back yourself. I do this all the time and don't generally get charged duty, but even if you do, it's worth it because you won't have the huge shipping charge.
Aren't there paintball shops in Toronto? Why buy from US, unless it's a really obscure part you need...otherwise stick to buying within Canada, yes you will pay the tax, but it's infinitely better than paying for shipping, because only Continental US gets that 100$ FREE SHIPPING discount, and on top of that, they usually ship via Fedex, or UPS, which will charge you almost 1/4 or of the value of the product if not more when it's valued more than 20$, anything under that, its free....as for USPS they charge you a flat rate 5$.......