Yeah guys, Valve makes no profit from this, whatsoever.
If Menen had finished his failquote:
All proceeds (net of applicable taxes) will go directly towards the Japanese disaster relief fund that the American Red Cross has set up.
Taxes go to the government. Taxes need to be there because this is a purchase made by you. You could donate to the red cross, skip the taxes (as a big F U to the government or something) and have the same results. This way you get a TF2 item.
Why is that so hard to understand? Wynd_Fox explained it like three times.