I am developing a unity package and I will place it on unity asset store after it is completed. In this package I am using some of the mixamo animations to animate my characters but the animations are only a small part of the package. The question is that can I set a price on my asset and sell it or should I put it for free on asset store? I don't mind making some money from selling the asset but only if it is ligal and it is not in violation with mixamo terms. But if it is not ligal to sell it then can I at least publish it for free on unity asset store?
no you can't sell or give away free any Mixamo assets however you could sell your models and have images\ vids of this model doing Mixamo animations included as a demo
i.e, when people want Mixamo files they need to go get it from Mixamo, not you