If you are not familiar with this type of contract work then you would not know that busniess class is normal. I have heard that training is in Moscow, but have only heard that from one person. Generally UT Air would pay Avionco and then Avionco would pay the contract employee. However if UT Air is late or slow or fails to pay then nothing says that Avionco will have the money to pay contractors.
Way too risky.