Lili, that is how most of us became addicted. We had some from a G'mother or such, or in my case, there were several on the farm when we bought it. Then you start noticing the little boxes of peonies in the big box stores, and then potted ones in nurseries, and from there you want more varied and sophisticated peony and so on and so forth!
Yep, you are well on your way with the rest of us to a fun addiction!.