Hello. First of all you have to check wich model is this horn.There is a very usefull Timelist in this same forum, check it out, is below.You have to say if it's a Tenor, Alto, Soprano...etc.And mainly, the price allways depends of the conditions of your horn, i mean if the sax is in a good state or is a bit beated or something like this.The better way to procceed is to send your sax to some professional to make some adjustement and repairs, and then, when your sax looks almost new (if don't looks like new yet), you will be ready to ask for a mor coherent price.