distantmantra
CAGiversary!
http://www.play-asia.com/paOS-13-71-fu-49-en-70-36hg.html
I had a feeling this would happen soon enough based on used prices on Japanese sites, and I just got an email about it earlier today. The Super Robot Taisen Z Special Disc for the PS2 dropped from $54.90 to $19.90.
Please note that 1) this does not contain the original SRTZ game, and 2) you do not need SRTZ to play the Special Disc.
I figured there would be at least a few other CAGers that might be interested in picking this up on the cheap.