Planning my 2nd Canadian GP trip. Just got my tickets in the mail. Amazing value! Four 3-day grandstand tickets come to $582 CAD ($426 USD) including all fees & delivery from Canada. For perspective, four 3-day USGP GA tickets come to more than $700 with all the fees included. Four seats in the cheapest COTA grandstand (T4) come to more than $1200.
Free Pit walk on Thursday for anyone who comes out, ticket or not. This is esp nice because in Austin to get into a Pit Walk you have to own a suite or a PSL, or have Paddock Club access.
Something else I love in Montreal is that the Historic cars' paddock is wide open. Here in Austin, they stick them down in the support paddock and deny access. Those guys love to show off their amazing cars and they're very proud of them and their history, so it sucks for the fans and for them.