I hate to say it but it looks more like about a $3500 to $3800 machine to me. I have been watching Banzai Run Machines for a couple years now and can't justify the price they are bringing these days but I have seen several under $4000 that looked nicer than what I see here.
Don't get me wrong - a seller can ask what ever they want for a machine and there might be a market in your area for your machine at $4300 but I just don't see that much value in one in that condition.
Anyway - free bump and best of luck getting it sold.
Unique machine & low production run are on your side. Now you just need to find someone that wants one bad enough to pay $4300 for it.