Not paying is not a good idea - there might be issues later when you enter Canada at a land crossing or get pull over for a moving violation.

Paying is not a good idea - without understanding the full implication of a paying the fine which in many places equals a guilty plead and the ramification on your driving record and insurance rates. Especially for a 50kph over infraction.

Look up Traffic ticket paralegals in BC/Vancouver who will know the consequences and fight the ticket to get the damages of the charges and the record minimized.