Will be travelling to Japan later this year and found out about these workshops in Tokyo where you get make "your own" modded Gameboy. Guessing modded refers to being able to choose custom shells and buttons, not so much to anything else there might be (I am not very knowledgeable about Gameboy mod scene).

Looks super cool, but is very pricey. Around 55.000 Yen for different courses, so I am a bit on the fence for booking it or not.

Anybody here have any experience with these? Would those be "normal" Gameboys you need cartridges for?

Edit: found a video of one, just in case someone is interested seeing how it goes https://www.youtube.com/watch?v=wjHSz8goaZ8