
One of the best deals I scored recently is a bunch of 20 Sheet Masks from Dermal for only 6000 Won (about US$5.50 or so) so they're a real steal!

Sheet Masks generally retail for about 1000-3000 Won/each =)
I can drown myself in Dermal's Sheet Masks and won't get broke at all =D

The masks come in randomly selected variations (35 different types available in total). I got 5 each of the Royal Jelly Masks, Potato Essence Masks, Collagen Essence Masks and Cucumber Essence Masks.
I really like Dermal's Sheet Masks. They're not too wet or have a slimy gel that could make the mask slide down your face (CL masks have the tendency to do this). My skin really feels refreshed and moisturized when using any of their masks.

The more masks you buy the cheaper it gets:
Auction is here
30 masks cost 7900 Won
40 masks cost 9800 Won
50 masks cost 11700 Won
100 masks cost 18400 Won
200 masks cost 34000 Won

So you can order a bunch and share with all your friends and family =)