Zetsu will be good, but mostly with bt Kakuzu I guess. Training potions - superb. Also seems they started working on the groceries so trend is good.

Sage Jiraya - he is quite cheap and obviously collector's choice not end or mid-game thing. I wander if he would have BT.

Good for training potions, shows a trend they will be working on the grociries.

Happy for Zetsu, I was expecting that, but probably mostly usable with bs kakuzu.

Jiraya Sage - this guy had bt, no? I don't expect fireworks to be anything but collector's value anyway.

Zetzu sb is super nice, I just focus on what works and leave problems to someone who can solve them. Easy-peazy