Got cheated at a pharmacy. Pissed me off.

Where I live is a mixed use building. Apartments on the second floor. Some shops on the side facing the strip mall. They opened a pharmacy in one of those shops. I seldom go in there preferring the brand name shops like Nepstar. I needed something simple. A bottle of hydrogen peroxide. They were 3-4 rmb a bottle Nepstar and other pharmacies . I go in this shop and grab three. The lady is poking the register for what seemed a long time. Gets the calculator and shows me 36 rmb.

I hand back two and she changes it to 12. I needed one so i paid. Got home tell my SO and send her a picture of the bottle. She tells me they ripped me off. For 8 rmb.

Really pissed me off.