That's a little steep for the forums, IMO.
Here is why I say that. 1. Not a Turbo Duo controller included 2. 3rd party power supply 3. The system has quite a bit of scuffing. 4. Even tho there is a new laser assembly installed, all caps on these should be replaced. These systems are famous for that.
Just several months ago, I was able to buy a boxed Turbo Duo, with all original hook-ups, and a Super CD game pack-in that the seller swapped out for the Ys pack-in since I had it already. I got this package for $300.00 shipped.
With that said, you may have better luck if you adjust the price some in the forums.
Good luck with your sale.