I have never seen them at my Joann's store but I understand there are Joann's "superstores" out there that are much better than the average store. You can find them online though. Their website has one as well as a swift if you don't want to have to find a way to hold the hanks. They can both be seen
here. I don't have this particular winder but I have seen others say that it is nice enought. Joann's also has
coupons online a lot that will give anywhere between 40-50% off the REGULAR price. (sorry not off the sale price.) You can only use each coupon once, but you can divide up the orders and find a couple of different coupons to buy both if you want.
I believe
Kemp offers the Royal Ball winder in her store too.