Does anyone have any idea about how much an Aria Pro II XRB-electric bass (1987-1989) would sell for? The body is in perfect shape, but there's some minor surface rust on the pick-up screws. Also, it includes a hard case that is in great condition. Needs new strings. There's someone selling it locally and I was wondering what a fair price would be. If anyone could help, it would be appreciated. Thanks.