"$200 vs $1000"
Well gamestudio Pro is also $899 , and $1000 is actually INSANELY cheap.

There's also differences between Com and Pro for gamestudio , but nowadays mainly the multiplayer numbers. Still , Torque has torque advanced for like 300, but , the way T3D is looking , it's well worth the $1000.

Again , the only thing left is the speed , see how fast it runs with all those shaders.

Same for unity.