Yes, someone bought a $50 Z22 printer about 10 years ago and which like an old Fore 390 ran tough but burned a lot of “oil,” and the ink carts cost about 34.00. And later the carts only had half a sponge in them! So right away i found out how to refill them, which is very easy on Lexmarks.
But a pint of the right ink, which is about 2.00+ an ounce on at Christian -owned http://oddparts.com/ink, and then buy 3 of those large poultry baster syringes at the dollar store (or reg. ones if not illegal in your state), and for black, heat up a paper clip in a pair of pliers till red hot, then puncture the middle of the top on the end above the contracts. Then put in about 1/4 of that type of syringe. It cost about 1.00 for refill that way, and the black ones on my old X32 have been refilled about 15 times or more before quitting. Thanks be to God.
The printer mfgrs fought back in various ways, and so it is a war.