Yep. Toronto to Buffalo is only 100 miles distance. That's why many hardcore Leafs fans from here will drive down because seats are cheaper and more readily available than in the ACC.
Yeah i had the Caps game on the TV and sabres leafs game on stream and it's great to have such a mixed crowd for a rivalry game. Makes for a great game and i can imagine ticket prices are through the roof at the ACC and as you said Sabres don't sell out all that often.