Clearly...its upselling already made hardware and they throw in a 3d printed shell. Why would anyone buy it? Didn't even look like a good 3d print. Layers are very visible.
The whole project just sounds weird. Any mini-PC can be used for emulation, so I'm not sure what would make this one any different. Fitting a Ryzen 7 7840 in it is also a bit overkill unless you're planning to emulate PS3/Switch. I would expect a small PC for emulation to be way cheaper, maybe in the $200-300 range.