blue book does seem to be low priced.
so what is the solution to bicycle pricing? anything online?
thanks
The best way is to look at what things are selling for.
On E-Bay, there are "Sold Ads", which may be limited to the last couple of months, but list actual selling prices, rather than dreamer prices.
Craigslist will now give you everything within 100 miles or so (asking prices, not sale prices). There are ways to search further and wider such as:
Google:
Bike Description site:craigslist.org
If the bike is "interesting", the people on BikeForums will give you some candid numbers. Sometimes down to the nearest $50, other times a range from say $500 to $1500.

And, of course, everyone has a different opinion.
https://www.bikeforums.net/classic-v...th-appraisals/
As far as Bicycle Blue Book, it is algorithm driven. If you put in a basic Hybrid from 10 years ago, it may be close. But, if you have a 20 year old road bike or cyclocross bike, then it may be off a bit.