I have been using Buyee to purchase collectibles from Yahoo! Japan Auctions and other Japan-only sites for some months now. The process is pretty straightforward and many shipping options are available once products reach their warehouse. You have the option to consolidate packages and store them for 30 days for free. Their fees are very reasonable and their service is fast. There are coupon campaigns all the time and they even have a Firefox extension to add products to your cart directly from supported websites. So far, I haven't had any issues with them. Seriously, I would not hesitate to recommend Buyee to anyone looking for a service of this kind!