A price searcher is
O a firm that has the ability to control to some degree the price of the product it sells.
O a firm that seeks out buyers who are willing to pay the price that the seller is asking for the product.
O a person who actively seeks out the best price for a product that he or she wishes to buy.
O actually any firm or consumer, because each market "player" searches for the best price at which it can sell or buy.