On purchasing one bottle of Phen375 (30 tablets) you need to invest $65.95 and make a saving of $10. On a purchase of 2 bottles (60 tablets) you get an additional bottle for free (i.e., 60+30) for $131.90, and save $65.95. The best deal, on purchasing 4 bottles (120 tablets) you get 2 additional bottles for free (60 free tablets) worth $263.80. At the same time you save $131.90.