If I remember correctly, to get the new product to nationals, Rob had to air freight a bunch of the product from asia. That was very expensive. To recoup those costs, he required mostly cash for that shipment.
Once the main shipment arrived on the slow boat from China, he began accepting Redemption cash.
I don't know if the slow boat will arive in time for nats this year or not. He may air freight a few cases just to be sure to have some for nationals.