For an office printer they look like a good solution but not for an "art" printer in my opinion.
The large tank Canon and Epson printers are only 4 color printers so don't expect to get high quality art reproduction or photo prints from them. You need at least 8 ink cartridges and preferably 10+ to get professional looking prints.
There are already solutions similar to the Epson Eco Tanks. Pick a good 10 color pigment based printer and get a professional level ink refilling kit from Precision Colors - www.precisioncolors.com
or the https://www.octoink.co.uk/
in the UK. The inks aren't like the cheap ebay stuff, but they do cost less than factory inks.