These are some really valuable information; I've always considered buying from Japan or overseas but was always worried about the customs and taxes.
I've never purchased a watch from overseas before, but have purchased rather expensive apparel (about MYR12,000) before, and what happened was that the seller shipped using EMS, and then I received a notice from Pos Laju telling me that I may appoint them to help me pay the tax and clear customs then deliver to me with a small service fee, OR, I could just go to KLIA and do it myself; I ended up going to KLIA and cleared the parcel on my own; was able to convince the customs officer that the jacket I purchased was actually MYR1,200 ,not MYR12,000 - they actually reluctantly agreed, and I got lucky and paid much less tax.