your looking at collector to collector prices: $400-500 in fair condition, $800-1000 if super nice and original. mabye a little move if uber nice or huo.
If i wanted another one id be trying to the get em $300 fair cond $450-500 super nice
However right now man isnt quite th best time to be buying. Theres already been a few several thousand dollar trons that have sold recently and the trend will be continuing for the next 6 mos or so i would guess.
WHen i bought mine i paid $200 and it was literally falling apart with NO bottom at all. I overpaid a little i think but i really wanted it, so i went for it!
I paid 300 for a nonworking tron. Was told the cab was solid but not too much detail other than that. It was from a trusted source though so that goes a long way. I would say $400-$500. Sound should be easy enough to fix.