There's a convenience store in Sydney, which has a full blown A320 flight simulator in the back, behind all the shelves of snacks. The owner of the store is a migrant to Australia, who is (was?) waiting for his overseas aircraft maintenance engineer qualifications to be locally recognised. He's turned the simulator into part of his business.
Edit: Based on the street address, it might have moved out of the convenience store into its own premises since the article was written?
Further edit: Sadly, it seems as if the owner, Ahmed Abdelwahed, might have been deported. Hopefully the deportation never went ahead, or he made it back into Australia on another try.
Flight control https://www.thrustmaster.com/products/tca-captain-pack-x-air...
Flight control panel https://eu.winwingsim.com/view/goods-details.html?id=925
Light switches https://www.puairkorea.com/product/pu-autopilot-addon/
MCDU https://eu.winwingsim.com/view/goods-details.html?id=945
Rudders https://www.thrustmaster.com/products/tpr-thrustmaster-pendu...
Airbus Fenix remote on iPad https://fenixsim.com/a320/ + https://support.fenixsim.com/hc/en-us/articles/1245845642830...
16 key keyboard from Aliexpress, there are a lot of sellers
The rest are a beefy gaming PC
If you don't get the rudders then the whole thing (minus the gaming PC and iPad) can be bought for less than 1000€, even less on sale or second hand.