I was just at my local Micro Center store, and was surprised to set that they started carrying arcade cabinet kits, along with separate components (encoders, t-molding, buttons, joysticks, cabinet vinyl art). Looks a lot like the kits on gameroomsolutions.
Here's a link of what's available in store:
https://www.microcenter.com/search/search_results.aspx?N=4294811805The cabinets seem to be held together with knock down cams (like Ikea furniture), and also seem to be quite solid and sturdy. I didn't care for the art, but fortunately the cabinets come in plain black so you can add your own artwork.
Seems like a very convenient resource if you have a Micro Center nearby.