But on a serious note, there is a place in Westdale that I believe can at least refill cartridges. It's on the left side of the street kind of close to the movie theater if you're facing away from McMaster.
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Dillon Dixon
Alumni
Software Engineering and Embedded Systems
There's also Canada Computers in Dundurn Plaza which is open 11 am - 5 pm on Sunday. You can check if they have your cartridge (or a compatible one) in the Hamilton store on their website:
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