Why anyone runs on road ULSD is beyond me. In this state (Michigan), off road red diesel is exempt from road use tax so it's always about 45 cents a gallon less than on road. None of it's cheap today (and I'm not getting into that because politics are a big no here) but suffice to say, I just dropped 400 gallons of off road red in my bulk tank to the tune of $4.99 a gallon. You do the math, I just hand over my credit card... Also, I don't suspect it will get any cheaper, will most likely increase in price. This economy and all the goods and services you get basically runs on diesel fuel. Don't take an Einstein to figure out why inflation is what it is...