Here is the answer: in the beginning of the year, there were only 7 LS cards above 90 meaning that if you were lucky enough to pack a 90+ LS card, you had a ~1/7 chance of getting any one particular player but you were guaranteed a high priced card.
Belli, Nolan, max, and Cole all dropped below 90 overall for at least some period in time so their prices were depressed, but even more importantly, is the number of players who rose to 90+.
Now there are (I think) 13 LS cards above 90+ so if you do get a lucky draw, you only have a 3/13 chance of landing degrom/trout/verlander and a 10/13 chance of landing Soto/freeman/etc. so the odds of landing one of the most expensive cards in the game has actually dropped. Now imagine if one of the 89’s has a good post season run and gets promoted to 90+, the odds will further deteriorate. Fortunately for you, people will continue completing collections and sds will probably have a pack sale again, so in the long run, the value of these cards will decline, but not as rapidly as earlier in the year.