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HP wants you to pay up to $36/month to rent a printer that it monitors
(arstechnica.com)
This is a most excellent place for technology news and articles.
That's an insane price. It would literally be cheaper to buy a new HP printer when the ink runs out.
I'd hate to defend this ridiculous company but the price is "up to" so cheaper plans are available, and the one you're quoting includes ink for 700 pages a month which I doubt a new printer for $35 will do.