Wow! Some of those rigs look like they costs thousands...
My setup = $20 keyboard, $20 mouse, computer that runs AH lowest settings at a 30 FPS max, and a $15 Logitech 3D Pro...
I had a used laptop for 5 years that barely ran aces high on NO graphics, my business finally picked up at a safe pace that I went out and bought my rig and monitor as well as flight stick.
I spent a few grand, but its the only thing I spend money on next to beer, food and aces high:)