Supporting u-Boot.realsimulation server by buying Das Boot?

I looked into the Terrapin website and it says I can support his site by buying DasBoot movie Uncut version.

When I click the link it brought me in the Amazon website. Is it really work?

I am however Canadian, so I might be more interested if it support canadian shipping and not paying an extra 50$ for custom duties.

Also the offer can include another movie called DownFall. If buying these two movies, do I contribute more to the site??

Thanks