You want cheaper and useful?
Look on E-bay for the deals on an RC sim with cable for your brand radio. About $15. The Sim is going to be FMS on a CD (free for download... you are buying the patch cable.)
FMS is decent. Not quite as good graphics as Real Flight G2... but the flight simulation is good.
You can use the FMS patch cable... and your TX, to fly from Tower View in Micosoft Flight sim.

Now you have... a GREAT simulator and the use of your TX at under $80. (and virtually unlimited aircraft to choose from. so many places with aircraft profiles to DL... you will NEVER run out.)
I like G2... nothing against it except its overpriced.