Reddit reviews Retroflag SUPERPI CASE NESPI Case JCase SFC Case Functional Power and Safe Reset Button with USB Controller, Raspberry Pi Heatsink Fan for RetroPie Raspberry Pi 3 B+ & Raspberry Pi 3/2 Model B/B+

There are a few that come to mind when it comes to soft shutdown cases. Most, if not all, cases in this list require the installation of a script, which can be done through the Raspbian terminal (accessed by quitting EmulationStation, either by pressing F4 or by pressing START while in ES and selecting the bottom menu item, then Quit EmulationStation). You could also access the terminal through SSH using PuTTY.

• RetroFlag NESPi Case+ (there is a script you can install, and on the case PCB there is a switch that needs to be in the On position for the script to work)
  
• Kintaro Super Kuma 9000 (This one has a script you can install as well). Probably one of the more popular console cases
  
• Piboxy Case from iUniker (Has a script you can install. You can either shut it down with the power button, but it also comes with an IR remote in which you could also use to shut it down with)
  
• Rasptendo Retro Gaming Case
  
• RetroFlag SuperPi Case (similar deal with the NESPi case in that the PCB has a switch you have to turn on so that safe shutdown works). There are two variants of this case, the one I linked was the US SNES variant. They also have a Japanese/European SFC/SNES variant as well..

This is the right answer!

This is what you'll need as a bare minimum:

• Raspberry Pi, the latest revision 3B+ costs about 30 USD
  
• SD card with about 8 GiB, under 10 USD
  
• Micro USB wall charger, around 10 USD
  
• USB controller, around 8 USD
  
  This will be around 60 USD all in all. I advise you to go the extra mile and get a nice case and a really good controller.
  
  There may be cheaper ways but this is by far the best I have tried! Please note that you'll need a little bit of technical knowledge to "burn" the OS onto the SD card (the Pi does not have any hard disk). All the necessary steps are described here:
  https://retropie.org.uk/docs/First-Installation/

I recently picked up the Retroflag Superpi Case just for its coolness factor. It comes a very solid SNES pad and add power and reset switches.

https://i.imgur.com/WvrRzU4.jpg

https://i.imgur.com/ilVxGUh.jpg

https://www.amazon.com/dp/B07GN8TZRV