What is the difference between the “Tribes of the East” and the “Hammers of Fate” expansions?

The price for Tribes of the East should not be less than 350! But even that doesn't guarantee it's a licensed copy. I recommend buying it from large stores like M-Video, Eldorado (don't criticize Eldorado – I bought a licensed version of The Witcher there on three DVDs for 200 rubles during a promotion), Bely Veter, Beringov Proliv, etc. And even better, if you have a good internet connection, download it through Steam. There, the English versions are always licensed.