This thread is hilarious. When I bought my first Xerox DC12 back in 2002, the first thing that people warned me was to get a physical signed letter from someone in a position of authority at Xerox that LIMITED the yearly increase. I requested this and the sales person squealed like a stuck pig that this was completely impossible, had never been done before, and they would never, ever put much of an increase on clicks. In fact, most of his customers "never had any price increases". Pre-warned, I stuck to my guns and got the signed letter. Funny enough, a year later a letter came from Xerox with a massive click charge increase. I think my maximum agreed increase was 5% and after some increasingly harsh words with Xerox, they finally agreed to limit my increase to 5%. I was not on a cheap click deal!
So, is Xerox the lone black hat in this industry? If you believe that, you will get eaten alive on your first contract. I insisted on the exact same thing with Konica-Minolta when I bought our first one of those. Sure enough, there was a massive increase applied on the first anniversary, only resolved by producing the PHYSICAL signed letter from Konica Minolta. Make sure that you get the written agreement for EVERY press you buy. I've even had vendors insist that a maximum increase agreement only applied to the FIRST press bought. Luckily I get a signed agreement with EVERY new contract.
This toner overage on a Konica contract was tried on with me on the last (C8000) press. I point blank refused to sign and they finally agreed to scrub that clause.
BTW - quote from EVERY digital printer sales person I have ever bought from: "I can't believe that you read the entire contract, we never have anyone do that!". There's a lesson there somewhere.