>>b112+(OP)
I have an epson eco-tank printer. I buy 3rd party bottles of ink once every 2-3 years. The upfront cost of the printer (multifunction model ET-4550) was high in 2015 ($500) but I've spent maybe $60-70 in ink to print (as of this morning) 19,536 pages (13,954 in color, 5,582 in B/W).
I can't see a good reason to keep buying printers that are locked into proprietary cartridges or toners.