I love Duffy
so I took a big interest in him in the parks.
Storybook Store on main Street sells Duffy and Shellie May teddies, they're around 30 each. They come as a standard design and you buy the outfits separately ranging from 15-35 I think. You can also get a Duffy pillow pal (again 30) and we found a couple of mini Duffies for around 7-8 in a shop underneath the water tower in the studios.
I wish DLP was more like Tokyo, they do so much
But anyway my main suggestion with this and any shopping innDLP is if you don't find something in one shop, try them all, while mostly similar, some stock does vary across the shops
Hope you find one! (Oh I also got a certificate with mine hehe