Usually not. A degree from a Canadian university does not need a foreign credential evaluation for TN purposes; evaluations are for degrees from outside Canada, Mexico and the United States.
Spend on what the file actually lacks
The evaluation rule exists because officers cannot assess every foreign university, but Canadian, Mexican and U.S. degrees are read on their own terms. For a Central Frontenac forester with an Ontario degree, the money is better spent on obtaining an official transcript and a letter of good standing from the provincial regulator. If any part of the applicant's education came from elsewhere, for example a master's degree completed abroad, an evaluation of that particular credential may be useful, but only if the letter relies on it. Government charges at the port of entry are published by CBP, and USCIS petition fees are set out in the fee schedule; verify both before travel rather than budgeting from memory. Legal review of the employer letter is the one professional cost that most often prevents a refusal.
Hypothetical example: a Canadian hydrologist relies on a master's degree earned in New Zealand, while her Canadian undergraduate degree is unrelated to the offered work. A first review should identify the exact credential the employer letter invokes and obtain an evaluation only for that credential if needed. The transcript, diploma and evaluator's report settle the education point; an all-purpose evaluation of every course can waste money without strengthening the file. Order records before booking travel, because a late evaluation can force a change in the intended start date.