It's meant to be both philosophical and economical.  I have some I'm unloading, so I'm curious what people think fair prices are.  Also, I'm wondering what people think the gameplay value is.  From personal experience, Strip Fighter II was god awful as the hit detection is terrible and the animation is wonky.  Shinsetsu 2 is what it is.  The game is meant for one thing and that it does well.  AV Poker is alright if not a bit boring, but it's not any worse that comparable official games.  But with the others, as RPGs, I can't really judge since I can't read/speak the language.  Thoughts?
Specifically, these:
Shinsetsu Shiawase Usagi 2
Hi Leg Fantasy
Lady Sword
AV Poker World Gambler  
Strip Fighter II 
Body Conquest II 
AV Tanjo (GED-1015)  
CD Mahjong Bishojuo (GED-1010)