I always buy my pure organic maple syrup at Costco.
Costco: Kirkland Pure Organic Maple Syrup, 33.8 ounces, reg. price $12.49, or $0.32 an ounce
Amazon: Coombs Family Farms Organic Maple Syrup, 32 ounces, reg. price $30.13, or $0.94 an ounce