I work for Ricoh so....

Don't forget other consumables when figuring out your cost per page. The Ricoh C400DN for instance has toner cartridges that only have toner so there are separate photo conductor units you have to replace at some point there is also a image transfer belt and fuser that are consumables. I don't know what the actual cost per page is if you include all these items but I deal with many people that are surprised when they find out about this stuff later.

Fortunatly for me most of our customers have supply inclusive service contracts so all the consumable items are covered under that and they just pay per page.

Also even with laser printers the supplies do go bad just sitting unused not as fast as ink jets but it still happens.