If you haven't heard of Tony Moly yet it's a korean cosmetics store that is very much like Etude House.
They have a Valentines Sale from Jan. 27 - Feb. 19, 2012 in ALL Tony Moly boutiques and for department store branches it will be from Feb 9 - 19, 2012.
Not all items are on sale, though. I've listed the sale items below.
So go to the nearest Tony Moly 'coz I had my eye on their BB Cream but now it's out of stock! Poor me. Sale items are available while supplies last. So hurry!