Upon purchasing an HP printer I enrolled in their automatic ink delivery program, not realizing that you must continue paying monthly it the cartridge they send you will no longer work. Do, after paying $3.00 per month for the past 28 months, I finally received ONE color cartridge, no black cartridge. I decided that I don't print enough to warrant this huge expense for ink and cancel, only to learn that unless I continue to pay $3 per month, the ink cartridge that I has now cost over $80 WILL CEASE FUNCTIONING!!! So, now I have the choice of cutting my losses or being held hostage for approximately another 30 months until this one runs out, by which time I'll probably need a new printer, so whatever future cartridge they send me will be useless and I will have paid HP almost $200 for one cartridge!!