If you are trading it to a gun shop, I'd be happy getting $150, depending on what kind of shape its in, $115-125 is more realistic... but don't be offended if you only get offered $100. Thats on a trade now, gun shops gotta keep the lights on and the employees fed.

You might could find a buyer for $175, if you have some extras with it. Gun shops usually don't care about extra chokes or other things like that... doesn't increase trade value any.... but it does increase perceived value to third market buyers.