It was awhile back when I tried this so I forgot what I even ate. All I remember besides the great burger and shake I had was the line up was stupid long, it was ridiculous, but the burger was absolutely worth the waiting. Yes, the price is high. But I can afford it :P and for anyone else who can, and do not mind shelling out some bucks over high quality burgers, it's well worth the bucks.
I still need to try more homemade burger spots in Toronto to really judge and see where Burger's Priest ranks but atm, it is up there for me. We shall see.