In terms of sporting events in Canada or just the GTA, the Blue Jays ticket prices are still very fair, affordable and less expensive in comparison to teams like the Leafs and Raptors or heck even a concert. What will set you back is the cost at the concession stands, which are crazy expensive. That's at every venue - Rogers Centre, BMO Field, Scotia Arena, movie theatres etc.
Not sure the Jays are the best deal in the MLB but overall baseball isn't crazy expensive like the NFL down in the US or hockey up here. As well with 81 home games, not every game will be a huge sellout so you can even snap up some good seats below cost like during a weeknight in April/May. Also, depends on the opponent, date of game, giveaway, weather etc., that factor into ticket demand.