And estimate and price and package it. Easier to sell just as a group.
Of course, they always have to worry that buried in the pile is a Mickey Mantle rookie card or other treasures.

I've bought collection after looking at a dozen or so to see how they were kept and used. Of course I look for 60s thru 80s rock, jazz and blues, only because I know a little about those artist.
After a day or two and only selling 4 or 5 they seem happy to see em all go $20 to $40.

5th Dimension
Stoned Soul Picnic
With the groovy tie-dyed cover.

Sold ones on eBay go for $2.99 to $28.

https://www.ebay.com/sch/i.html?_from=R40&_nkw=LP+5th+Deminsion+Stone+Soul..&_in_kw=1&_ex_kw=&_sacat=0&LH_Sold=1&_udlo=&_udhi=&_samilow=&_samihi=&_sadis=15&_stpos=48858&_sargn=-1%26saslc%3D1&_salic=1&_sop=12&_dmd=1&_ipg=50&LH_Complete=1&_fosrp=1

I've had some great finds at Goodwill and the Re-store store. But, I've found a watch for a dollar that I sold on eBay for $400 at a yard sale. I do donate lots of items.

I've never made much. I don't have that discerning eye. But I think it's fun to look for vinyl... brings back memories.

About $30 and up for the new ones. This has boosted the price on good condition records. I like vintage stereo equipment. Sounds a lot different than the new stuff. I have a 1973 amp/tuner and it sounds great. Always on the look out for tube amps, but are hard to find.