GSA-4163B is not released in South Korea. Someone in Lithuania can do the same thing what some South Koreans do. Some people just went to China and imported some GSA-4163B units in small quantity. Which is just what anyone can do without having to invest millions at once. If there are at least a few hundred people who want to buy GSA-4163B for, say, US$80, have someone volunteer to visit one of the western European countries to order GSA-4163B in quality of like 100 or 500 or 1,000. Volume order always gets discounts like 10% to 50% or sometimes even more. It was exactly what I did to get my very first DVD writer, an IO DATA ND-1100A. I asked one of my friends to ask his own friend whom I don't know personally to visit some Tokyo shops when he goes to Tokyo on business. He bought just ten ND-1100A because he had to carry them himself and 10 ND-1100A weighs about 10kg, not light for international flight passengers. My friend had to give about US$4,000 prior to his departure, in cash. I often do that sort of things. Same with ND-1300A and some of the Registered ECC memory modules I still use. For people who don't like in countries like US and Japan, such methods can be effective. But you need volunteers who don't mind spending time and money for the pure sake of other people.
Another way is to let the wholesalers and impoters to get interested in GSA-4163B and other new drives. Most times, the traders do not import some new hardware products just because they do not know about the performances and popularity in the actual market where the users are. I often talked to drive and media importers to import various things. Such activities can sometimes also cause the big retailers and official distributors to reconsider. Or to work harder or reduce prices or reduce the time to market.