I have an Ibanez AEF30EMS (http://www.ibanez.com/acoustic/guitar.aspx?m=AEF30EMS) and it's not working out. The strings buzz constantly. I've changed strings and adjusted the action, but it hasn't improved. I've decided that I need to ditch this guitar and grab a new one. So how much do you think I can sell this one for if I'm having these issues with it? It's worth $450 new and I've had it for almost a yeah and a half.