First of all, the thread title is too general. My guess is the road bikers are out biking, and not looking at BF as closely as they might in the dead of winter. They may have skipped over.
I ride mostly old junky stuff -- don't know much about expensive road bikes -- that one looks nice -- retail was $1099 -- asking $6xx -- 2003 model --
If it fits you & you like it, if it's not worn much, if the quality is in line with new bikes (really) costing a fair bit more than $6xx -- if you really need a $6xx bike and/or can afford it -- why not?
Sorry not much help -- but -- maybe try a thread title like "Opinions Wanted - 2003 Opus Fidelo" or similar.