I finally finished my 2007 Japanese Collegiate All Star set (which were jersey card inserts into boxes of the 2008 Upper Deck Team USA set) a few months back. As expected, this card (#JN-16) is the one that set me back the most:
Yu-chan ran me around $35 on eBay.
It was somewhat surprising to me that this was not the last card I needed to get. For some reason, it seemed impossible for a while to find the card of Takeshi Ogino. I had won a card from someone on eBay but he never sent it. I was finally able to get it from the sports memorabilia section on Amazon.com.