Welcome DeeGeeDuffy. You'll find that DuffyDaisuki has as the very first post of this thread, instructions on how to order, click Duffy Post Procedure to go to that post item. Scroll down to procedure and it's in step 3. There is a link to the Japanese website. If the items are listed, then it's available for to order from Duffy Post, during one of the shopping trips. To calculate the US equivalent you can use Yahoo Converter to get an approximate conversion rate. Since Duffy Post uses Paypal, their prevailing exchange rate will apply.
If you have other questions, post away.