Run of the mill? You mean hatchery stock/sourced birds I assume.
If you are looking to make a profit on these birds then you must raise hundreds of birds and buy feed by the truckload. Otherwise you are going to have to sell them for $25+ a pullet.
Price varies on breed and how much money you have invested into them. If you are trying to turn a profit by hatching or raising chicks to point of lay pullets they will be more expensive than say someone who buys 4 month old pullets and turns around and sells them.