You know I was just thinking about this kind of thing myself. Growing up in the back woods of Essex I remember playing video games such as ghost n' ghouls, 1942, golden axe, snowbros etc but for the life of me I cannot think of ever being blown away by the design of the cabinets themselves. They all just looked like generic cabinets. These days I realise they probably were, just with different boards etc swapped out as games came into and went out of fashion.
I just took a look recently on ebay and boy was I amazed a grand for donkey kong, fully restored and working, but wow.

Kinda makes me wish I could move to the US to start my collection, given I doubt I will ever own a house large enough to accommodate my list of must have cabinets.

That said I have seen a lethal enforcers and gauntlet which would have required some major TLC in a second hand warehouse, but are long gone now.