Yes. I was actually at Casino Niagara over Christmas. They have a small area resembling a sportbook where you can place Proline bets. As someone mentioned, it's a minimum two-team parlay. I believe the maximum is a $1,000 wager, which has to be split into two $500 tickets. The clerk I spoke with told me that they get quite a few max bets, which is great for the bookmaker (i.e. the Ontario government). As for the prices, the moneyline odds are terrible, however, the point spread numbers were fairly competitive the day I was there.