Greetings!....
I am seriously considering buying another Supergun...but before I do that I was going to test the BYOAC waters here to see if anyone wants the one I bought off Gozur last year.
It's a Great Western "Deluxe" model and you can see it in all of it's glory (with specs) at their website here---
http://www.gwtrading.com/hga.shtmlThe photos below are NOT of mine....but mine is identical except that the button are red, white and blue (not a rainbow as they show on the GW site).
I'm presently using it with my Neo 1 slot, Sega ST-V and the occassional Jamma board and it works 100%.
I AM LOWERING THE PRICE TO $250.00 shipped (same terms as below)!!! (FOR BYOAC before I Ebay this sucker!) 
I was asking $300. (and will including shipping if you're not too far. This this is fairly heavy and I may tack on a couple of bucks for shipping if nec).
I am willing to consider fair offers..... and would consider a trade for a GameCube, GameCube GBA Adapter + at least $100. bucks as well!
Let me know if you're interested!!!
FYI--- NO JAMMA BOARDS ARE INCLUDED. THE PHOTO IS AN EXAMPLE ONLY OF A JAMMA BOARD THAT I PULLED FROM THE GW SITE!!!
MameMaster!