Chesapeake Boat Basin in Kilmarnock VA has diesel for $4/gallon as seen in Waterway Guide. But you need to add 5.3% sales tax, making it $4.21.
We cross the Bay to Crisfield MD. Somers Cove Marina for 2 nights. We hear that town might serve up some crabs and oysters rather close to that marina. Also taking delivery of some Rx and Amazon “stuff”… the local stores will also get their share, to be sure! LOL