predatory pricing 
noun [mass noun]
The pricing of goods or services at such a low level that other firms cannot compete and are forced to leave the market.A wide variety of business practices can run afoul of Section 2, including everything from forcing business partners to sign exclusive contracts to predatory pricing....
- While any company could, in theory, choose to engage in predatory pricing, only a monopolist with access to significant capital reserves or to the capital market could do so with any hope of success.
- If we don't have the protection of the ban on below-cost selling, people can move in to predatory pricing, out-manoeuvring local retailers, who have invested in their communities.