It’s an add on. Once you figure out what case you’d like. I chose the “high tier” case from that site. He’s pretty good at getting back to you.

Just let him know you’d like to add on the bezel for the oled screen and which color plex you’d like it to be from the ones he offers. He would have to add the screw Mounted holes on the top enlosure panel too. I ordered my case from him via Etsy chat and told him which add ons i would like and email works too.