Question about Canon Pixma Pro-10s

It needs the PGI-72 ink. This is available online from electronics retailers or also from specialist shops. I have also tried to print with refill ink or cheap imitators. The printer always went on strike.
Before this printer, I had the previous product 2 times and was very satisfied with it. This one (mine) is a drunk. It takes an eternity until it starts printing.
As for the consumption. In the past month I have printed 428 pages of manual and 2 A3 colour prints. All with the quick print setting on plain paper. I replaced a total of 8 cartridges (Fr 17.40 each). Now it is telling me that 3 of them are running out of ink.

I also need the official Canon ink PGI-72 in 2 multipacks or individually (the consumption is quite high). At Digitec under Canon PGI-72. Regards, Frits

The original ink from Canon. Instructions and info:
https://de.canon.ch/printers...
Kaufen: https://www.digitec.ch/de...

Greetings!