Check videohelp.com or cdfreaks.com.
These particular cake boxes used to use RiCOHJPN media codes, and were some of the best ever made. The first few series were at least as good as Tayo for half the cost. Now RiData uses more of their own Taiwanese made media and is some of the worst stuff you can buy. For me, I only buy the best - a couple bucks more now means fewer headaches down the road. Just FYI