Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Ink eater, even color that you don't use

Bought two of them, sounded like a superdeal: $59 each after mail in rebate.Is color fax, but thought "hey, I'll just print B/W faxes".Guess what, I need to replace the color catridges as well, even if they still seem full/not dryed up!. So I am spending $50 a month per machine on new cartridges, and I am trashing apparently FULL cartidges. For some reason the machine is able to track the catridges, wasn't able to fool it yet by putting an old but full cartidge back. BAD BUY, VERY EXPENSIVE IN USE.