Cattlesale.com - For calves it is by the pound, for breeding stock it is by the head.
To transport depends on how far and how much the load weighs. There are rate sheets for mileage. Look at the mileage and take the weight and multiply it by the rate to get the cost (but it is minus fuel surcharge). A load of cows going 110 miles that weighs 51,000 pounds would cost $428.40 plus 6 - 9 % fuel surcharge. That is california rate.