It happens that the company whose inks I use has been selling on their ebay store. That said, I would never buy refill ink blindly, based on price or an enticing ad. Only buy non-oem inks that have been recommended by people whose advice you trust. This Forum has more than ten years of accumulated experience with non-oem inks. Check out what frequent contributors on this forum recommend and stay with it.How many of you here use oem ink only? have you all ever had issues with non-oem ink that you purchased off ebay?