Why make a separate shop?
It is easier to quickly list similar items on this shop than on the main site. Also, because of the sheer number of items in stock it is sensible to spread it out instead of putting too much on one server. ^^
Can I combine shipping with an order from the main site?
For the time being, no. The handling fees are the bulk of the shipping fees for this site anyway (all the packaging material that will be used to ensure your order gets to you safe) so the savings in shipping would be very minimal.
What shipping methods do you offer?
The only offered shipping method is registered airmail by Korea Post (this comes with a tracking number and it is the most convenient + quick + safe method).
You can track your shipment with your tracking number here:
(please be sure to select 'International Registered Item' when you search)