Assuming that the buyer's maximum price exceeds the seller's minimum price, we may conclude that an exchange will take place at some point between these extremes. If the exchange is for one unit of goods at or near the buyer's maximum price, it is readily seen that he will enjoy little or no consumers' surplus. If, however, the exchange is at or near the maximum price set by the buyer for each of several units he will, as we have seen, enjoy a consumers' surplus. The seller also enjoys a sellers' surplus, which we may define as the difference between his minimum price and the market price. Since market price is usually somewhere between the buyers' maximum and the sellers' minimum, each group enjoys a surplus, the size of which in a barter regime would be largely determined by the higgling ability of the parties to the trade.