Just so you know, and I found this out by the guy who designed what all Inkjet printer heads are based on, all ink copyrights are held by Dupont. Canon, Newlitt Pack, etc., all of them have to pay money to Dupont. Dupont has a very strict distribution network globally. They have billions and will jump on anyone who tries to steal it's patent by producing ink that works with inkjet printers. It's the most expensive liquid in the world. I doubt it costs much to make, but that where it's at. It is the local laws that determine just how much ink you can buy and who can sell it. In the U.S., you can now buy O.E.M. ink in bulk, and ge generic printer modules, but the printer companies hold individual patents on the modules and are making them harder to reset.
I use
www.inkproducts.com to let me know what printers still let you use their "Ink Refill Station", which are many many bottles of ink, and the tools to clean the heads, and the head cleaning solution. While you may not be able to get products from them, they can give you useful information as to which printers use what ind of ink and which can use refillable cartridges. You look up the model number, and you will find the equivalent model in the E.U.. The printer manufacturers make the basic same models for worldwide use, they just change their product I.D., so as to confuse those who don't want to pay an arm and a leg for ink, abd wish to by pass their schemes. If I take into account the price of fuel, and the time it would take me (plus I have trouble walking, and am in too much pain to stand around and wait), the cost of going to a local printer, which in my case doesn't exist, far too expensive. There is something to be said for Mom and Pop shops which are fast disappearing here.