Don't get me wrong, they are likely doing the same thing that many other subscriptions do. Hoping you sign up and you forget that you have it and they just bring in the money.

But if you know you are going to use it (like maybe you already take a regular trip to a printer), you know how much you are going to print, it isnt horrible.

Sure being locked in for 2 years sucks, but given they are sending you hardware some sort of contract is likely required.