See Seed Stratification document in the Resources section of the website
There is no such thing as 'bonsai seeds'. These are seeds of plant varieties that can be used for bonsai. All of the development and training will need to be done by you, diligently, daily, and for decades.
These are seeds that we use ourselves! Great efforts have been made to source these seeds from good genetic strains, and from trustworthy people.
*Seeds can be shipped to the USA - please email to place an order: email@example.com