This alley's lots of fun! They're the only 10-pin alley that's located off of a subway stop (just past Kipling station), are decently cheap during the weekdays, and offer cosmic bowling.
Go on Wednesday nights, when you can get games, hot dogs, and fries for 99 cents each after 10pm. You'll still have 3 hours to bowl (or 2-2.5 hours if you need to catch the train back) and you'll have a full belly when you're done. On Mondays there's a $5 cover but then it's just 75 cents a game to bowl.
The lanes are a little run down, but are still pretty clean and don't get too busy. Plus, it's not like they have much competition if you're coming from downtown!