How much does the company pay when buying records? Is it single or bulk price depending on what the genre and artist is

I have over 65 years of 33 1/3, 78 & 45rpm records totalling over 1,550 todate From 1903 to 1970s, seeking a realistic buyer that knows their stuff.

My experience is,.. we buy records pays half or less what the value is known to be.

Every record has a different value based on title and condition. These are conglomerated together to arrive at a price for a collection. Rarer, more desirable titles in clean condition get the highest offers.