How much is a Chuck Berry collection worth?

We often get the same kind of questions:

I have this and this Chuck Berry record or a whole collection of Chuck Berry records. How much is it worth?

Most askers are disappointed with our reply. There are a very few records which value a significant amount. For all others the main problem is not the value but to find a collector interested who doesn't already own it.
Less and less collectors exist and for records which you paid $100 some years ago you're lucky if someone pays $10 today.
A good example is last month's auction of records and memorabilia from the collection of BBC's famous DJ "Dr. Rock". The auction company was wise enough not to offer each record on its own. Instead they created a lot of all the Berry albums.
So they offered a

Collection of 36 Chuck Berry LP records including Chuck Berry The Chess Box Set, The Latest and The Greatest, I Am A Rocker, New Jukebox Hits, One Dozen Berries, Greatest Hits, After School Session, Rockit, Chuck Berry at the Fillmore Auditorium, The London Chuck Berry Sessions x 2, The Greatest Hits Spot Records, Golden Decade Volume 3, Concerto in B Goode, You Never Can Tell, Golden Decade Volume 2, San Francisco Dues, You Never Can Tell Diploma For Two Marble Arch Records, Back in the USA Live Everest Records, Bio, Hail Hail Rock & Roll, Greatest Hits Marble Arch Records including Roll Over Beethoven, Rock & Roll Rarities from the Golden Era of Chess Records, Back Home, Chuck Berry's Golden Decade, The Blues Volume 1, Chuck Berry in Memphis, Fresh Berries, Hail Hail Rock & Roll MCA6217, Rock & Roll Rarities, Jukebox Hits, In London and Chuck Berry Americas Hottest Wax, many with copies of photographic prints of Chas White and Chuck Berry

This is an almost complete collection of Berry's UK albums from the 1960's onwards, mostly unplayed. See here.
The estimated value was 80 to 120 UK Pounds, i.e. $100 to $150. It sold for 85 UK Pounds, i.e. approximately $110 or $3/record. Go figure.