http://www.g2play.net/category/1478/planetary-annihilation-steam-gift/ Guess this site sells illegally, what does the Uber say? In case you were planning to buy some keys:
Guess they bought a bunch of keys during the recent Steam sale (sold for ~17 EUR at that point). 27,99 EUR
Despicable... if you scroll to the bottom of that page, you'll see this: Note: If you aren't getting it, they are specifically selling what they say can't be sold by anyone other than Valve.
I think it's circumventing country zone pricing. this sort of thing will always happen. technically it's not illegal, it's just called taking advantage of another country's lower purchasing power. and it's good that Uber be good in this way to the less fortunate then us. watch this in it's entirety.