Finding a repairer is easy (in the UK). Many charge for assessing and quoting on the repair. The eventual repair cost is likely to be about half the value of the camera, as said above. I've only experienced one problem requiring repair, which cost less than the cumulative cost of insurance up to that date.
Canons used to be particularly vulnerable to damage from swapping memory cards in and out. This was classed as an operator error not a fault and not covered by warranty. Cost between £50 and £150 to repair depending on the state of the pins in the slot. They may have fixed the design.