I am now based in Korea, so everything will be sent from Seoul! 
Here are my current products:

Pencil Case

£ 4.00 / ₩ 5000 / ¥ 400

Mont Blank Omnibus

50+ pages

£ 5.00 / ₩ 6000 / ¥ 500

Mont Stickers
6cm x 6cm
Big and Beeyouteafool
₩1000

Picture coming soon!

 

Badges: 5 pack

₩3500

Picture coming soon

T-shirt
₩10,000

Postage is ₩1000 for all products (in Korea) and no added cost for extra items, unless you buy thousands. That would be incredible, but I would then need to organise some postage agreements.