SquarePeg Toys delivery to Poland

So I am thinking of getting myself the Egg Plug from SquarePeg Toys. However on their site I don't have an option to select Poland as the country of desitination.

Does anyone know how can I order their products to a country they don't have listed? (Maybe someone already had a problem like me in the past) Or does onyone know of any site that resell those toys?