Thanks!
I ordered mine from http://www.valkyrie-exchange.com a long time ago. It was $35 total w/ shipping. But, I don't think they have any in stock anymore. Your best bet is Ebay at the moment.
You could also use this link to do a Froogle: http://froogle.google.com/froogle?q=yf-19+1%2F72&btnG=Search+Froogle&show=dd
As far as the directions are concerned, mine are also in Japanese. Don't worry about it. The numbers are still numbers and the paint/color table is in English. The rest is pretty self-explanatory.