Most valuable LP

A 1953 mono three-record box set of Milstein playing solo Bach in mint condition. I bought it for a dollar at a thrift store and sold it years later on eBay for $461.00. A friend, now again, years later, recently sold the identical set on eBay for $750.00. 

I imagine that some of my original 50s jazz recordings would be worth a lot these days, especially the early Blue Notes. That, however, will be up to my heirs to discover, as I have no intention of selling them at this point in my late life. .

Frank

I bought a bunch of RCA Living Stereo shaded dogs and Mercury Living Presence LPs in the late 80s, about 150 LPs, from an antique book collector for $450 and sold them to a guy visiting the DC area from Tennessee two weeks later for $4000.

Bought This for .49 cents at a local thrift shop.  I live in a city with one of the top music schools in the US so I suspect this came from a prof's collection.  I have priced it from $100 to $299 on the web.  lol
in mint condition, very sight wear on cover

A Mercury Living Presence Janos Starker Dorati Dvorak Cello Concerto Bruch LP Mercury SR90303 RFR-3 Stereo ED1

I have a sealed MFSL of Billie Holiday I bought around 30 years ago, no idea what thats worth. Might not be worth crap. I have a box set of Rolling Stones albums I bought in the 70’s, black box with name in sparkly glitter,came with a black glitter tee shirt. Taped it to cassette and havent touched it since.

MFSL Beatles box set; purchased new and mostly unplayed.  Number 4300 something from the first pressing.