A:AnswerPrinter is about 7in / 18cm height and 15in / 38cm wide. Depth is a bit tricky (see photos). While actual unit depth is about 13.5in / 34cm, it has power connector on the back, which will not allow you to put unit close to the wall. With that cord bended, you need to have at least 15in / 38cm of shelf depth.
A:AnswerWell, it really depends on cartridge size and ink tank size. Buying only ink vs. whole cartridge each time make printing cheaper, but you need to "maintain flow" (print something at least once in couple weeks). If you leave your printer without work for a long period, ink may harden inside printing heads, and in case of cartridges you can just buy a new set, but with CISS (liquid) you might end up buying a new printer.
I would say, that in general CISS (liquid) are more for people who print a lot and regularly, and cartridges are more for occasional printer users.
A:AnswerWidth (across the front) is 14.75"
Depth (front to back) is 13.5" for the body only, and 23" with feed tray and output tray extended; add 2" for loaded paper
Height is 7" for the body only, and 10" with the feed tray extended; add 2" for loaded paper