Mickey's Appliance Store Was a New Retail Seller of Appliances

Mickey's Appliance Store was a new retail seller of appliances in Sunwest City.Mickey's innovative sales techniques and financing caused the appliance department of Luckluster Department Store to lose a great many sales.Luckluster was a large department store and part of a large chain with substantial buying power.Luckluster told a number of appliance manufacturers that if they continued to sell to Mickey's,Luckluster would stop purchasing from them.The manufacturers immediately stopped selling appliances to Mickey's.Mickey's filed suit against Luckluster and the manufacturers,claiming their actions constituted an antitrust violation.Luckluster and the manufacturers could prove that Mickey's was a small retailer with a small portion of the market.Because the relevant market was not substantially affected,they claimed they were not guilty of restraint of trade.Discuss fully whether there was an antitrust violation.