If they're not grafted varieties, it can take 10 years to get any fruit at all. And it's recommended to get multiple different types for pollination to be more successful.

Recommended for Ontario: https://www.grimonut.com/ (NoTL area)

Bare root seedlings that you'd plant in the spring. Though it is not clear to me if what they're selling are grafted or not, I've never been 100%.