I got mine from Edible Landscaping in Virginia. The owner is super friendly and very helpful. One of my grafted saplings died almost immediately after planting, and he replaced it no questions asked.
https://ediblelandscaping.com/collections/pawpaw
Just don't get NC-1, Mango, Rappahannock, Prolific, Overleese, Wells, or PA Gold.
Don't get me wrong, if you get one of those when they're perfectly ripe then it may well still be a completely life changing experience. But you can also do better, and given then you're going to have them for the next 25 years, it's worth doing the extra work to get the absolute best cultivars you can rather than just buying the first ones that are in stock, even if it takes an extra year to get started.
