Instead of making a brand new video - he covers it pretty well. Consumer's will eat the costs of tariffs. Pokemon business's have just been slowly raising up their listing prices for Japanese products. Most people won't notice.
But for local consumers, many consumers will not want to buy from Japan anymore and deal with the extra step of paying a tariff charge. US based Japanese card sellers now have leg up, because you have done the actual work of importing the products, and can save the consumer the headache of that paperwork.