Buyers have to adjust to using computers. Vendors and buyers need confidence in the CALM assessors. Competition may be limited if there are no other similar lots of stock in the vendors geographical area. Most lambs are sold through the saleyard auction system on a dollars a head basis. All stock types and lot size can be sold.
Vendors can set a reserve price and can compare quality and price.
No marketing skills required. Transport cost, saleyard dues must be paid. Possibility of buyer collusion and no negotiation between buyers and vendors. Limited feedback for the vendors, no carcase feedback. Vendors generally have to accept the price on the day whether or not lambs are sold.