Buyer price discrimination and collusion.
D004465:Economic Competition / Q000331:legislation & jurisprudence*; D004467:Economics / Q000331:legislation & jurisprudence*; D005249:Fees and Charges / Q000331:legislation & jurisprudence*; D011682:Purchasing, Hospital / Q000331:legislation & jurisprudence*; D014481:United States; D014485:United States Federal Trade Commission