Is there any Pokemon merchandise sold here?

I would assume so. Call ahead though as I'm sure inventory moves pretty quickly since this store is in midtown and generates a lot of foot traffic.

There always is, however this is a place on midtown Manhattan, New York, so thousands of people come every day and buy things, so things go quickly.

I would call to find out. They have many novelty items

Generally there are always at least a few things. But, as another reviewer mentioned it depends on the season if they just have a few random manga and keychains or if they have a larger assortment.

It probably depends on the season. There was a lot of pokemon plushes and some manga in the summer.