How about something like this:
http://www.ebay.com/itm/LCD-Geeetech...kAAOSwSWJXRXXA
It is 200mm X 200mm and has the mk8 extruder and gt2560 controller. It is a good printer. You have to assemble it and as such this type of printer is very friendly to upgrades. And on that very subject, in these days maybe instead of multiple extruders we should be hunting down mixing extruders with the hope of loading primary colors and making many colors. While I built a new printer for it all of this can be applied to the geeetech printer in the above link..