Quoted from markmon:

It is not relevant what you paid. A $2000 machine and a $10000 machine should both work and be under warranty the same way.
Anyways, pinballs break new or not. It should be on the owner to dismantle wires and trace down issues. It's up to the manufacturer to assist and suggest things and pay for parts. It's up to the owner to do the leg work.
In your case, it doesn't sound too tough. Get your dmm out and set it to DC volts. With coin door closed test red on the coil and black on the ground strap for voltage at the coil. If it's not present, then be tracing wires to that coil from the previous ones and check fuses. It's likely a wire that came off.
If you do have voltage at the coil then it's likely a short between the transistor and the coil - either in the trace from the transistor to the board header or in the wire from the header to the coil. Neither of these are difficult or time consuming to track down. (Maybe 15 minutes of effort here). If you can't be bothered with doing those simple things then perhaps just sell your game.
I'd be much more unhappy having to fill in and redecal part of that cabinet. That seems like a much bigger job.