We been selling our calves out of dairy herd at 48 hours old. Under 100# ones bring $4/#. 100#+ bring $5.50-7/#. Solid black crossbred beef x dairy bring even more. Some 60# twins were over $500 other day. I can't afford to feed them any longer than that here. 2-300# calves only make me $100 in 60-100 days. I got couple hundred bucks in them messing with them plus if one dies eats up a lot of profit.