Instruct: Classify the given review as either positive or negative.
Query: Lifespan way too short

I don't know who in the real world averages 5% coverage, which is Canon's spec for getting 2000 prints out of this unit. So you can't believe you'll get anywhere near 2000 prints. I've been averaging about 600. I love my MF4270 printer and get great quality prints, but the toner life is completely unacceptable.