While pricing usually means that sellers agree on the price, it may also include agreements between buyers to determine the price at which they will buy products. The Net Book Agreement was a public agreement between British booksellers from 1900 to 1991 to sell new books only at the recommended selling price, in order to protect the incomes of small bookstores. The agreement failed in 1991, when Dillon`s large book chain began deconstructing books, followed by Waterstone`s rival.   In Canada, it is a criminal offence under Section 45 of the Competition Act. Bid manipulation is considered a form of pricing and is illegal in both the United States (see 1 Sherman Act) and Canada (see 47 Competition Act). In the United States, agreements to fix, increase, reduce, stabilize or set a price are inherently illegal.  It does not matter whether the agreed price is reasonable or not and tacit for a good or altruistic reason or agreement. In the United States, pricing also includes price maintenance agreements, reduced prices (even if they are based on financial needs or income), credit conditions, a price plan or scale agreement, a common formula for calculating prices, prohibiting advertising or committing to advertised prices.  Price fixing, any agreement between competitors (“horizontal”) or between producers, wholesalers and retailers (“verticals”) to increase, set or maintain prices. Many, but not all, price agreements are illegal in terms of cartels or competition.
Illegal acts may be prosecuted by public or civilian prison officers or by private parties who have suffered economic damage as a result of their behaviour. If the price of a new supplier is less than the normal offer price of the company, it may be an agreement between existing suppliers. Since 1997, U.S. courts have divided price fixing into two categories: vertical and horizontal pricing.  Vertical pricing includes a manufacturer`s attempt to control the price of its product in the retail sector.  At State Oil Co. v. Khan, the U.S. Supreme Court held that vertical price agreements are no longer considered in themselves a violation of the Sherman Act, but that horizontal pricing is still considered an offence under the Sherman Act.
Also in 2008, the united States v LG Display Co., United States v. Chunghwa Picture Tubes and United States v. Sharp Corporation. , who were heard in the Northern District of California, agreed to pay a total of $585 million to balance their lawsuits in order to set the prices of liquid crystal panels.