Due to their nature bulk lots and collections are not returnable. Sets and singles are returnable for a full refund. Checks,money order, or Paypal are all accepted. (US funds only please) Insurance is 1.65. International bidders that require registration is 10.40 extra. Multiple items may be combined for shipping. Shipping and handling is a single charge per shipment(Highest single charge applies) Supplies can be combined for reduced shipping. Invoices are sent out daily due to volume but may be combined up to 1 week. At this time please do not use Ebay's checkout. Thank you for looking :)