Hi Stephane,
You may want to deal with these suppliers of licensed character party supplies:
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Link hidden: Login to view (**Note: this supplier may link you to another page when you go under Party Supplies" category. You can use their search function too when looking for Disney, Pixar, and Marvel character items).
Just remember that wholesale pricing works on volume buying. Please contact these suppliers directly and let them know what your requirements are in regards to purchasing volume .
Hope this helps.