Quick post: Manga Drawing Pro Shop (I 've purchased from them twice in the recent past) notified me that they will stop selling Copic items since they are authorized sellers in Japan only and they can't sell anymore to any other country.
Because of that, they're selling for one week everything Copic 10% off, meaning Sketch markers at $4,70 and refills also at $4,70.
Since they don't charge shipping, I think it is a pretty good deal, so I thought to let you know.
I just ordered some refills and some nibs (2-3 markers as well, I just couldn't resist!).