For combined shipping add all items to your cart before checkout go to your cart and click request invoice and I will send you one with one shipping charge. If you cannot figure out how to request an invoice you can pay the shipping and the difference will be refunded to you when your purchase ships. If you do end up paying shipping for each item you purchase then it will be refunded to you and you will only be charged once.

They will ship in a ziplock bag and bubble mailer envelope.