Evaporust by the barrel?

My attempt to acquire the 55 gallon drum of Evaporust was a failure (for some reason "Mercado Libre", the Mexican equivalent of E-Bay, could not process either of my credit cards). So instead of paying $21,000 pesos (about $1,266 usd) for a drum of Evaporust, I drove down the street to the Ranch Supply Store and purchased a 5 gallon jug (re-packaged in a liquid soap container) of molasses for $250 pesos (about $14.00 usd)