Back then, it would be so strange to imagine how popular and in-demand sports cards are. A couple of months before the hobby went supernova, almost no one even cared about how many cards there are in the market. Now, population reports help determine a card’s value and popularity on the market. A good card to prove this argument is Zion Williamson’s 2019 Prizm rookie card

 

In a recent post by Goldin Auctions, Williamson’s most popular rookie offering now has more than 18,700 PSA 10 graded cards out in the open. This is now considered as the card with the most number of PSA 10 slabs in existence.

After that piece of information has sunk in, this development has several implications for the hobby. For starters, one must remember the law of supply and demand. If there are tons of PSA 10 Zion rookie cards flooding the market, the value of each will diminish at some point down the road.

At the start of June, this particular gem mint Zion Williamson rookie card was valued at $435 on eBay. Two months later, it’s now down to $399. Of course, its price can still potentially go up when the new season starts, especially if the New Orleans Pelicans start to win some games because of him.

On the other hand, the sheer number of PSA 10 Zion Prizm rookie slabs will eventually influence the price of the card itself in the long run. Rather than chase what everybody is going for, the wisest course of action is to invest in low-population or short-printed cards for a better chance of retaining their value. At the end of the day, being wise and patient with your card investments will help you go a long way.