Where can I purchase a century bob punching bag in canada?

I do karate and I am looking to purchase a punching bag or something that I can practice my puches and kicks at my house.

So I came across the Century Bob punching bag, it is supposedly adjustable in height (which would be great for practicing against different sized opponents, and since it is molded like a human it would great for targeting.

Now my only predicament is that I can find almost nowhere that I can get it for a reasonable price in Canada. I checked on Amazon.com and there are tons of people listing them, but on Amazon.ca there is absolutely nothing. I mean you could always go to your local Sporcheck, but I don't exactly want to blow $400 on one.

So my question is if anybody knows where I could buy one for a reasonable price and is it even worth it?

Thanks