We charge $300 for field board. Large field, lots of tree cover for shade, 14 horses max (most are older retirees).
Field board includes feed and 24/7 hay (round bales), administering meds and giving supplements, and blanketing in the winter.
Horses are brought in 2x day for feed (everyone gets at least a handful). Most go into standing stalls, so everyone gets at least looked at twice a day.
There is no discount for buying and supplying your own feed. Obviously, owners pay for supplements and meds, and schedule their own vet/farrier.
Farm has a large sand ring, small grass ring, and 1 acre grass x-country ring. No ride out, but free trailer parking, and close proximity to Manassas Battlefield and Bull Run State Park (as well as some others).
The ONLY thing I would change is a run in shed. I’d like one large one in the field boarder’s field… but it’s not really necessary due to the tree cover. They have plenty of shade, and the ability to spread out, which is really nice.