I have a whole load of ink cartridges when I got from Freegle a while back - then my Canon PIXMA printer died! The cartridges are not compatible with my new printer unfortunately so they are available to anyone who can use them. They are all 550 or 551xl - so compatible with the following models:
PIXMA iP8750, PIXMA MG6350, PIXMA MG7150,
PIXMA MG7550, PIXMA MG5450, MG5550, MG5650, PIXMA MX925, PIXMA iP7250, iX6850
If you want to send me the model number of your printer I can check if they're compatible to save you a wasted journey. (NB some have been partly used so may no longer be useable)

Canon Printer Ink (Brunswick BN3)