Answer: No,the company is not guilty.
Explanation: In the given case, Hines could not be considered guilty of price discrimination as the price charged from different shops was same. The free samples were distributed for the purpose of campaign and the discretion to which shop they want to provide lies completely with the company.
Price discrimination refers to the practice of charging different prices from different customer which the company have definitely not done.
Hence, Hines could not be charged of guilty of price discrimination.