Well, here they are online (ranging from about $180 to $350). But it really is odd that I don't recall ever seeing one for sale in any of the local stores. Have I just been turning a blind eye?
http://global.rakuten.com/en/categor...oogtrans/ja/en
Frankly, I think my wife would split my head open with an axe if she found out that I bought myself a sewing machine to make rib stitches for a model.