There are some designs of Harry Potter that are not available in North America. The following designs are available in Europe through Amscan, but not sold by US or Canadian distributors.
Supershape Harry Potter Balloons (Product Code 40421-01 and 40421-02 UPC-0026635404211) are not licensed to be sold in the US or Canada. These balloons are sold only in Europe.
Multi Harry Potter Balloons (Product Code 40422-01 and 40422-02 UPC-026635404181) are not licensed to be sold in the US or Canada. These balloons are only sold in Europe.