Weaken Japan Yen is the good chance to buy Japan products!
Today, Rakuten is the one of the successful company of e-commerce, which was founded in 1997 as "Rakuten Ichiba". (Ichiba means market) One of the largest online shopping mall in japan.
Several years ago "Rakuten Ichiba" started an international service "Rakuten Global" (not sure when did it started) And some of affiliate stores started to use this service to sell overseas.
Now, you can buy directly from the stores in Japan online.
It may be more cost effective than buying through Amazon or eBay!?
Actually, not all products but some of are selling in nice prices, particularly special, rare products in your country will be so.
Rakuten Global for English