I think the guy behind Wolfgames (Matt? I can't remember what his name was) quit. The best place nowadays for FX stuff is Yahoo Japan. There's a
ton of FX stuff there compared to eBay and other places on the net. You might have to use a deputy service to buy anything, which will drive up the price along with shipping. Sometimes a good deal will pop up on eBay or here.
An aside, does everyone that gets an FX end up with Graduation?
I bought my FX new when it was still being produced, so I didn't have to buy Graduation, but it seems like it was such a common game that most people end up with it. I actually got it later as a freebie in a trade, so there's no escape!