Review on Postage Ink - Compatible Brand Postage Meter Ink Cartridge for IS280 Postage Meters; Non-OEM Replacement (Product # ISINK2 / Sure.Jet # 4145144H) by Don Devine

Today my old cartridge started to wear out (at about 90% usage) and I put in this new one. Almost 60 mails were waiting to be sent today and I was very frustrated when after installing a new cartridge I only got incompatibility errors on my counter. Lots of negative reviews should have alarmed me but I figured I was smarter. and dealt with lemons. These cartridges are junk as other buyers have confirmed. DO NOT buy this. They will return it and ask for a refund. I ordered an original cartridge today for almost $ 140, rushed to me by express, because I will have about 300 letters here, waiting to be sent until the cartridge arrives.