Their full board includes tacking and grooming services, laundry, “show maintenance” (whiskers, coronary bands, fetlocks, manes, tails, etc.), plus all typical full board amenities. There are lesson packages available for boarders (or there were as of last spring) and while lessons are still costly, they are not the full boat price as listed.
As others have said, they are on the lower end, particularly for Water Mill. I have one up there and when he was previously at Two Trees, board was over $2,750. I am lucky that I do not have to foot those bills, but the few times we’ve moved him since he’s been back on Long Island, we’ve been hard pressed to find places under $2,500/month. When Two Trees closed, there was only 30 days notice and a whole lot of horses and owners looking for a new boarding barn. We did look at Bright Side (as lovely as it is in the pictures), but a friend offered to board him at his barn (only 8 stalls but almost 25 acres) which is much quieter, more low key (though, frankly, every bit as nice!), and - incredibly - less expensive. It was a win/win/win for all involved parties!