It's an OK price in my opinion. I've seen better prices but I've seen a lot worse. NES collecting really got big after 2006, more and more of those NES collectors have rounded out their collection and have moved on to greater challenges like collecting for TurboGrafx-16. It's driven prices much higher than they already were. Especially on eBay. The benefit here is that you're buying a system from a known dealer and not a random person. Does it come with a 30-day warranty or return policy? I bet it might.
Good prices in my estimation:
TurboGrafx-16 complete console, no box, in good to great condition: $80-$100
TurboGrafx-16 CD complete, no box, in good go great condition: $160-$200
The TurboGrafx-16 system and CD look to be in nice shape. It's not that bad of a deal right now, I would take it.