Retro gaming is a massively popular Raspberry Pi application, and while loading your favourite old video games onto an SD card is pretty straightforward, building the physical shell of a gaming system can be daunting for those of us without 3D printers or design skills of any kind. PiBoy Mini bridges that gap by providing partially-assembled devices to their customers. The rest is BYORP: bring your own Raspberry Pi.
These things are cool in theory, but $100 before the computer is past what I’d pay for a novelty.
So you like $200-150 for a working system. Then the steam deck is like hey im $400 and way more capable.