ATTENTION!!! Not all GENUINE HP TONERS are EQUAL.... There are many sellers on EBAY not disclosing to their bidders that the Genuine HP toners up for bid are INTRODUCTORY TONERS. Introductory toners are supplied with new printers, such as the HP 1600, and are charged only to half the capacity of the cartridge. Introductory HP Toners Q6000A, Q6001A, Q6002A & Q6003A are being sold to deceived bidders who think they are getting genuine full capacity toners at a great price. Instead they receive a toner that lasts only half as long. Check the side of the toner for "INTRODUCTORY". If you have one, that toner is rated for approximately 1,000 pages as opposed to a fully charged one that lasts twice as long. Email the seller and ask if the toners are introductory. Usually they won't respond and one can only assume the toners are not the fully charged toners. Introductory toners are described as coming in white boxes or taken out of the retail box and shipped in bubble wrap to cut down on shipping charges. Just tell the seller you want to see the retail boxes they came in. They won't respond. Also, when in doubt of what certain sellers are selling, contact bidders who have won those particular toners and ask them if the toners they received are the Introductory Toners. Chances are, they will get a little steamed to fine they have been taken too.