But your reply is ambiguous.
I assume you mean that GoyardWorld is not a specialist reseller and that it is an outlet for fakes.
The word "dealer" has an undertone of something shady.
I wouldn't expect Goyard to have a "dealer".
But the reseller culture is very strong in Japan and it is not beyond possibility that one would specialise in Goyard. There are some well-stocked Hermes outlets selling at a premium and sourced from God knows where.
I know Goyard now has legitimate, store within a store boutiques, in some branches of Isetan and Takashimaya.