Wheres the cheapest place for agave nectar?

Im looking for the best deal on amber agave nectar (the less refined the better). I found a bottle at Marshall's and fell in love with the stuff but it was 5$ for a small bottle, even at a discount store that seems expensive. I want to use it primarily for baking so i will need a reasonably sized bottle. Anyone have any ideas? I'm on the east coast, and have access to most known and high end super markets.