Hi there! I'm relatively new to cycling (new enough to purchasing bikes that I can't tell a good deal), and am looking to purchase a bike I can use both for commuting and occasional long-ish rides. I'm looking at this bike: http://seattle.craigslist.org/see/bik/1198496855.html

My primary concern is comfort, and if this bike feels good, I'd like to get it. But, I'm a bit concerned that $300 is asking a lot for a 25 year old bike, however well taken care of or however many new components it has. Help?