$425 a month here in Maryland. Heated rubber footed indoor arena w/jumps and sprinklers, rubber footed outdoor arena with jumps and lights, huuuge outdoor sand arena with jumps, dressage arena on grass, 12x12 stalls with mats, blanketing and medications at no extra cost, lounge with kitchenette, cross country courses in the fields elementary-training level, tack lockers, and so much more... its basically my dream barn. I've been taking lessons there for eleven years, and boarding my own horse there for a little over a year :) I bought my horse from the barn owner, too.
Oh yeah, and the horses are turned out for 8 hours in the daytime in cold weather, and 16 hours alllll night in the summer. They're very happy with that :)