Oswaldo Alves/Paixao Book&DVD?

I know this is in Japanese, but what are thoughts, opinions, or reviews on this? Thanks.

Paixao's passing section is freaking awesome. Oswaldo's section is cool because he shows like 100 subs i've never even seen. Don't think it's a must have, but if you got the money, for sure buy it.

fantastic high percentage wristlock and bent armlocks. really cool stuff.