Gary Fisher Marlin Advice

[Jimmi]

Someone at work has left a Gary Fisher in the bike shed for weeks, according to another cyclist he’s bought a new bike. I’m thinking of putting a note on it asking if it’s for sale. However I have no idea what it’s worth…. I don’t want to take a pic in case it looks like I’m doing something dodgy. It’s metallic green, has Grip shift and says it’s made in USA other than some minor rust spots it looks in great condition. What’s a sensible offer?