Please explain Heritage's "Make Offer to Owner"

I see that a number of top-pop clad Washington Quarters from the June Long Beach Signature sale are listed in the auction archives with the "Make Offer to Owner" attachment. This is after several of these coins brought moon money. I would think these coins were bought by interested top registry set owners at the auction itself.
I mean the 1976-S PCGS MS69 brought $19,200!!! Fat chance anyone else would buy it at a higher price. Same for the 1982-P PCGS MS68 @$10,200.
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Unless you turn off this feature in your Heritage settings, or on specific coins you have won, the "Make Offer to Owner" setting will allow others to make you an offer. The owner is in no way required to honor the offer and ignoring it is the same as declining it. Many of us eventually remember to turn off the feature for coins we don't intend to sell.
Thanks for the response.
Same coin sold on HA in 2007 for $5888. Those spots on the reverse would drive me nuts though. "I'll take MS68 for $84, Alex."
I can't explain HA's "make offer", other than it's an option, and yes, some buyers there and elsewhere are speculators.
I'll hand this one off to @MFeld ...