9 shampoos for 4$

Suave professionals are on sale 2/3$ at my giant eagle. I bought 1 suave pro natural at giant eagle for 1.50, with the intent of boosting the checkout 51 deal so it will be free. I received a Catalina for 2$ off any 2 suave pros. The time it took to put my purchase in the car and get 2 more shampoos let my giant eagle card reset. So I bought 2 more for 1.18. Once again I received a Catalina 2 off 2 suave pro. So I rinsed and repeated ;). For a grand total of 9 shampoos costing only 4.00..