Orschelns, a Midwest farm supply store has Delvac 1300 Super 15w-40 gallon jugs on sale for $9.99 on November 29, 2019 only. According to their flier, they have a $6.00/gallon rebate on each gallon that brings it down to $3.99 each. (Well, when you figure the cost of the stamp, not quite) Limit 10 jugs per household. (10 gallons)