The theory is that the more realistic you can make your simulator setup, the more helpful it will likely be to your training. There are currently many vendors specializing in "inexpensive" simulator setups.
I got a little time in a Delta 767/777 simulator 8-10 years ago. They would donate a little evening time to charities, who would sell it as part of a live auction (said charity at that time was having their event in the Delta museum at ATL, next to Delta TechOps).
While having a full cockpit on all the hydraulics is impressive, the graphics back then were not all that. What you have pictured is certainly superior.
Ah, computing power advancement!