How about purchasing online? It is safe and pretty fast by the way. Still I prefer to deal with Toys anime from Yahoo Japan Auctions and it works pretty well for me. I have been working with these guys for a couple of months already and I am pretty satisfied with prices and terms of delivery. Hope it can help

Kiddy Land is an incredible starting place - it’s kind of like their answer to Toysrus - with lots of relatively mainstream Japanese toy brands and franchises mostly aimed at kids

What is the coolest toy store in Japan?