Nice thing here (Michigan) is, ORD is not road taxed so it's usually 30-40 cents per gallon less than on road diesel.
I do pay about 15 cents extra per gallon delivery charge from my supplier however (for the convenience of having a bulk tank). Still cheaper than pump on road diesel which has no dye in it as off road is colored red and my fuel supplier does provide me with an EPA certified bulk tank included in the delivery price and that includes a hand pump and nozzle for filling the tractors.
My bulk tank is skid mounted with a built in containment berm as well.
The cost of diesel for me is a write off anyway and goes against the farm income as an operating deduction, consequently, the cost per gallon is not relevant anyway. The more it costs, the larger the offset.
My diesel farm pickup gets pump diesel but that is also a deduction as an expense but I do have to keep records and receipts for it.
Nice thing about being a working farm and registered with the state as a bona fide business is, just about everything is a tax offset, including the tractors and related equipment. Even my lube oil, filters and incurred maintenance is an offset why I buy my fluids in bulk and have them delivered to the farm.
Never had an issue with any of it and I have a good accountant as well.