Marin palisades Trail

[Jay49]

Hi, I'm new to the forum and have just been down to my local bike shop to try and trade-in my Marin but they said it would be better to try and sell it privately. A customer in the shop saw it and said it didnt look ad though it had been used and told me about this website and said it would sell easily on here. Anyway it's a 1992 Marin Palisades trail with a 15" women's frame. It's got all the original parts and as only been ridden a few times and then been stored in the attic ever since (shame on me!) Anyone any idea how much to put in on for? Any suggestions would be appreciated. Thanks.