How much are stock 85 250R carbs worth?

[yamaha225dr]

So here is the deal. My friend gave me this carburetor last night cause he had no use for the thing. I took it apart earlier expecting twenty years of sludge to be caked to the bowl but instead found that it is spotless! I feel bad about taking it from him cause he has a four month old child and just lost his job, so I am gonna sell it and give him the money cause he really needs it right now but I don't have a clue how much it's worth and that is where I need help from you guys.


http://i163.photobucket.com/albums/t294/Dale06_photo/CAM00138_zpsdd77bab8.jpg
http://i163.photobucket.com/albums/t294/Dale06_photo/CAM00139_zpsfdf959a6.jpg

[shortline10]

I just sold a real clean one for 50 bucks .

[yamaha225dr]

Sounds about right, Thanks! I may just give him the $50 and keep it for a spare.