I don't do flat fee's for board repairs, so it would depend on what's wrong with it. Something as simple as a bad RIOT would be pretty cheap, something as involved as battery acid damage would run a lot more. I've had board repairs as little as $20 and others that have come out to more than $100.
Contact me by email or PM if you are interested in sending it out.
Wrestle War? That's a Sega video game, isn't it? I'm not sure how you are going to fix a Gott 80b machine with that?
D