How to deal with a negative, 1 star comment because of high price?

Hello,

I finally received a customer feedback and I’m officially out of “new seller” phase. However it was a negative feedback with a 1 star rating. It says “bottle for $14 when in store it’s 5, what a rip off”. Clear case of buyer’s remorse?

How do I deal with that? It’s a little upsetting.

Thanks in advance