DBS Tu-154M AI can be purchased throught partners of DBS Studio:
simMarket
€12.50 (EUR)
Purchase on simMarket
alfaFly
Purchase on alfaFly
FlightSim.com Pilot Shop
$18.95 (USD)
Purchase on Pilot Shop
The FlightSimStore
$19.95 (AUD)
Purchase on FlightSimStore
SimulShop.com (PerfectFlight)
Purchase on SimulShop
