I understand the perspective...if you've only been in the hobby for a year or two.
But the market is simply returning to normal - distributors have healthy stock levels again, new games are expensive and are purchased knowing you may lose a grand or two when you sell them.
Used prices on good clean titles continue to slowly climb as manufacturers raise the price on new games.
Used prices on mediocre titles or heavily routed games are tapering a bit to pre-pandemic levels.