Buying a vibrator

Hi!

I am 15 years old. I have been using a n electric toothbrush as a vibrator, but it's getting boring and I want to try something new. I always pass by the vibrators at my local pharmacy and see one that I would like to get. It's small and easy to clean. If only I could just discreetly buy it from the store myself, I would be able to use it. So I was wondering, how old do you have to be to buy a vibrator from the pharmacy?