Soos - we took the Montreal toll road a couple of weeks ago and the toll is $4.60 that is paid when you cross a bridge at the western end of Autoroute 30. Smooth sailing for us! We travelled it on Saturday August 3 and then Saturday August 10 with our 5er in tow.
The Toronto toll road (highway 407) charges per kilometre that is driven plus other charges to enter the highway, plus a fee if you don't have a transponder. It will be expensive depending on how far you travel on it. Here is a
link to its website - click on Tolls and Fees at the top for an idea of cost.