Where are you getting the information about a second test being needed on arrival?
See "Getting Tested to Enter Canada" at
https://travel.gc.ca/travel-covid/t...ovid-19-testing-travellers-coming-into-canada
That is our federal travel advisory board site. There is no mention of a second test required *EXCEPT* if you have a layover, still in the EU or elsewhere outside Canada, that will cause your initial departure test to time out at 72 hours prior to arrival in Canada. If you have such layover (let's say: Iceland, for a daylong layover, for example), then you will need to be re-tested prior to boarding your connecting flight into Canada. *THAT* would be at your expense.
The only testing that the governments are paying for in Canada have to do with maintaining safe workplaces, or performing assessments at health test centres for people who think they might have come into contact with COV. But if you are merely curious, or you are travelling, then you have to go to a pharmacy and pay anywhere from $40 to $200 for a test and the documentation it comes with. If your workplace does testing, they are acquiring RAT kits from your local public health unit, at a very low cost -- or not cost depending on the public health unit and the type of workplace, and employees are not to be charged for tests. All presumptive positives on RATs must go for PCR testing, and are reported to the health unit, but something in the range of 60% of presumptive positives are negative on PCR testing. Negative RAT results are 100% accurate. Positive RAT results run only about 40% correct on the whole. (My partner does RAT testing with public health as a volunteer, and as a department lead at his university; also works as a volunteer in a pharmacy school vaccination clinic).