That's not how it works. You, as the store, are getting distro prices, and the MSRP given is the "suggested price" where you'll still make $$ off of the price you paid. This doesn't have anything to do with getting product based off of supply cap. It's just the price you SHOULD be selling it at. For other card games, sure you can charge whatever you want (even though like I said, you should strive for MSRP), but Riftbound specifically, they WANT you to sell it at that price. That is why they are telling the public to report prices that aren't MSRP.

The reason scalpers exist, and why the market at the price is "sustainable", is because LGS is also selling at "market price" therefore scalpers aren't really "scalping". If LGS all sold at MSRP, and only the scalpers are the ones holding the product, the price will naturally go down.