A.is often used with very expensive items
B.is only effective on potential car customers
C.is the most popular way of pricing a product
D.is the most effective way of selling low priced products
A.the buyers search from place to place for desired object
B.the government selects the best items
C.the government transacts with an individual
D.the sellers compete with each other for the bid
A.a want, a need
B.a need, a want
C.a machine, a tool
D.a tool, a machine
A.commodities that people buy constantly
B.commodities that people do not really want
C.commodities that people want but don't need
D.commodities that are inconvenient to purchase