Curious if its in the typical Sega / Frogger style cabinet. Any pics of the cab to post?
I think regardless of cabinet, unless someone is a die hard Astro Fighter player/collector, you're probably looking at most $250 and that's on the generous side, and also my opinion.
Is it wrong to know what something is worth? That is not a commonly discussed game, and if you're not farmiliar with Exidy's price guide, what does it hurt to ask?