Uses Fisher Space Pen PR4 cartridge. The discounts are based on the packages weight. Also, please, investigate your local laws before placing an order from us as many items we sell (like some knife models) despite of being legal here in the United States, are prohibited in some countries. At Survivor Hand, we are committed to providing our customers with the best possible on-line shopping experience. This includes a commitment to excellent customer service, even after your order has been delivered.You questions will be answered in, as much, 12 hours. And in many cases during the daytime, you may receive an answer in minutes. This item is in the category "Collectibles\Pens & Writing Instruments\Pens\Ballpoint Pens\Other Collectible Ballpoint". The seller is "survivorhand" and is located in this country: US. This item can be shipped to United States.