Actually the price for the seats is quite normal I think, it's not a big stadium, it's a club (about 3500 seats including dance floor), so the seats will be for rich persons, I think our "golden boys and girls" will buy these expensive tickets. Everything is expensive in Moscow, unfortunatelly. And I saw the same range of the prices for another concerts previously.
Even very very bad hotel will cost you at least 100 USD in Moscow and it'd be really awful, so this is our life