I'm just one person, and this is my experience, but here is what I am seeing right now.
The coin market is in complete chaos. The only efficient market is
ebay,and it's filled with junk. Coin shows aren't attracting mainstream collectors, because of COVID. Most of the bourse floor action today is dealer-to-dealer inventory adjustments, eye appeal purchases, and bullion speculators. Problem coins aren't moving anywhere near historic value, if at all. Eye appeal coins are selling, and right now eye appeal drives demand more than technical grade.
Almost all that I do right now is buyer-side agency, and my customers are being
very selective. I have no interest in adding to inventory, because the buyers aren't there. I suspect many other dealers sense this same caution. The ones I have known for years from shows and deals openly say so.
Some of these changes may be long term. Brick-and-mortar shops may become a thing of the past. Overhead costs, security concerns, and rolling COVID restrictions may bring an end to this era. The existing public auction sites are too dependent on guesswork, weak policies, USPS delivery, and yes, more guesswork to function efficiently. Until something like the late, lamented Teletrade reappears, collectors will either have to risk the shark-infested waters of
ebay or sit on the sidelines. (Disclosure: I do not buy or sell on
ebay, and never will.) Coin shows are problematic, too. COVID risks, security issues, and travel costs aside, the selection of coins and lack of competition by buyers as well as sellers make shows an expensive gamble right now.
The marketplace is moving rapidly to online transactions. Again, there needs to be a collector-focused option like the old Teletrade. Without that, the market will continue to be the two extremes: high end coins from the big auction houses and attic junk sales on
ebay. The middle market - the traditional collectors - will languish.
That's a very long rant, but my way of saying that it is better to hold the problem coins for now and hope better days return. Eye appeal coins will still sell.
Just my couple of cents worth.