Ontario Highway Traffic Act

Hi,

I got a ticket for 20 over (was doing 30, officer marked it down) and am trying to pay on paytickets.ca. The fine shown on my ticket is $95, however, the fine displayed at paytickets.ca is 141.75 (after 3 dollar service charge).

How do I pay my ticket? Am I responsible for the full amount, or just what the officer wrote on the ticket ...