I've used From Japan to purchase merch from Smooch. One thing to keep in mind, additional fees can add up quick and make your purchase/s a bit pricey. Maybe someone here can suggest a good alternative? You can also go the other route and ask a friend/relative that lives in Japan if they can ship you the items.
I recently used GOODY-JAPAN to order my happi. The rates are very similar to From Japan's. I did some quick calculations and there was only like a 40 yen difference. Big in Japan also has a proxy service and they have an extremely simple to calculate commission fee.
Just an FYI, you can buy the Christmas goods through the Fan Club store and regular Smooch store. If you buy through Fan Club store, purchases over 3000 yen have free shipping. (Saves you 650 yen)
So, do any international fans have an alternative for purchasing goods? Last time I bought from Smooch the price was too high due to shipping. I really want to keep supporting my favorite idol groups. Please let me know!