highly recommend making an appointment at the seoul maison. they had wonderful service (coffee, desserts, a tour of the store, ogling at the seoul exclusive and being able to try on the pieces). the boutique was sooooo light and airy - very different from the dark and hush decor of their usual stores. not sure about stock as i only tried on a few pieces but have heard from friends that they do seem to have more stock in general. i didn't get anything at the seoul maison but i purchased a necklace in busan. tax refund is aprox 8%. they use global blue so the tax refund worked out to be slightly under 8%