Curious what your plan is going fwd -- 2023 seems kinda way early to launch anything / take $ when you don't have a final prototype cut and running at the correct size with switches, plastics, lighting, final wire harness design, and some assets / coding done ? I guess UL listing isn't required unless you sell internationally maybe? Is there testing that has to happen to certify this before selling in the U.S.?
But more I am curious about manufacturing as you work a day job - is your plan to continue with this in the next couple years on top of your day job or are you picturing a transition to do this full time? As a one-man operation, hand assembling each game.. even if not as complicated and pretty as a Stern.. that's a ton of work per game. Are you picturing full light shows, a lot of sound effects, LCD animations going on? Or something more on the simpler side in regards to coding/modes & assets? With your background it sounds like you could do some cool coding on it, presumably fairly quickly. At your price point though, hand assembling.. it seems like you'd never even cover your man-hours of assembling each game, let alone parts. But you say that's figured out, so if you meet your quoted pricepoint per game delivered and make money, that's pretty impressive I will say that.
I think what you've done so far is really cool - really impressed that you got all the music licensed and the work on the mechs is neat, as is all the engineering on cutting costs. At the same time, I think it's hard for some (myself included) not to also be skeptical every time someone enters the arena saying they are going to cut costs in 1/2 (or more, in this case) and that everything can be done cheaper.. especially when they are fairly new to pinball. Building the prototype is generally considered the 'easy' part and you've got a ways to go to get to the final one... it's kind of impossible to know how many production hours it will take per game once you have a final proto, and can time an assembly of a second one.
Curious to see what 2023 brings - As-is, it looks like a cool homebrew that I'd be down to play. I'd really like to see the final production CNC version with inserts/lighting and code. I'd add a piece of feedback which is that I see the market for these maybe more in homes for families, and there may not need to be a coin door at all. Even the idea of shops/businesses having one to play, seems like it should just be a fun thing on freeplay rather than about making money.