From the way it was explained to me by a dealer, they buy by the pallet months out. Once it's delivered, whatever they paid is where they have to price it at a minimum, plus shipping, fees and overhead. Add profit, and you should be getting as good a deal as they can offer.
If they have orders being filled at prices from 6-12 months ago, you're lucky. Assuming they don't jack add a bit more profit for current market, you'll get the pre-craziness pricing until that delivery is gone.
Anything ordered after that is subject to whatever the manufacturer's and distributors charge. I posted a comment on another topic saying how one company announced a 3-15% price hike in April 2021. Any preexisting orders will be adjusted for the new prices after a given date. So, ordering early may not protect against all increases in prices.
Then there are the distributors. They can put older orders at the bottom of the pile. When the newer (more expensive) orders are filled, then they'll fill the ones at older prices -- you hope. There seems to be no real protection against price fluctuations. You order at high prices, you might lose money if prices drop. If you order at lower prices and prices rise, they could delay your order for a long time.
Anyway, if YG or any shop sells at lower prices than the market is bringing, it's probably because they ordered it at pre-COVID/pre-BLM/pre-Biden prices. Once it's gone, IF they can get more, it won't be that cheap until the market balances out again.
That's part hear-say, and part my opinion. It's my understanding FWIW.