Ton, unit of weight in the avoirdupois system equal to 2,000 pounds (907.18 kg) in the United States (the short ton) and 2,240 pounds (1,016.05 kg) in Britain (the long ton).
Reseller permits allow: 1  Retailers and wholesalers to purchase items for resale in the regular course of their business without paying sales tax.  Manufacturers to purchase, without paying sales tax, ingredients or components that enter into and become a physical part of a new article or substance produced for sale.
Authorized Resellers are 3rd parties selling Apple Products, in the USA, or in other countries. I believe that Premium is a status available only to International Resellers in countries that have no Apple Store Presence, in which case this status allows these 3rd parties to essentially act as 'Apple Stores.'