At least Han Dai, a professional purchasing agent, will have a large number of samples. Be careful if the store or purchasing agency only sells samples. It's hard to say that you can really set samples, but you can't just set samples. You have to order a large number of genuine products to match a certain number of samples, which also costs money.
There are many samples in Korea, which are bought or exchanged by local internal employees like companies. There will be samples and the whole package. The duty-free shop will give you some money when you buy it. Online duty-free shops do not write gifts, and there are basically no gifts. If a purchasing company has a large number of samples and keeps buying them, it should be cautious. We are basically more formal clothes and samples. Rare samples are kept by themselves.