Welcome aboard!
Cell Phone Hugger--Glad to have you on THR!
We'll need a little more info to help you with your gun value question. Manufacturer? Model number? General condition? For what cartridge? "Nitro Special" doesn't sound like a model name, and certainly is not a manufacturer.
Best of all would be photos: Shot of the whole firearm, both sides, and close shots of any markings. The higher the quality of the photos, the more help they are.