Looks barely ridden! I'd guess $150-175 as-is in Portland, OR.
Is that a lycra Schwinn saddle on it?
If I had that and wanted to sell it, I'd put on some barcons, some aero brake levers and a plain black saddle, then ask for $300, happy to accept $275. I just happen to have those parts on hand - I wouldn't go buy them then add them, unless I got them cheap, like $5 apiece.