pricewatcher

noun
UK /ˈpraɪsˌwɒtʃə/
US /ˈpraɪsˌwɑːtʃər/

A pricewatcher is a person or tool that keeps an eye on how much things cost.

My dad is a pricewatcher who checks the grocery ads every Sunday.


OTHER MEANINGS

2. A software tool or app that alerts you when an item's price drops.

I set a pricewatcher on that laptop so I'd know when it went on sale.

3. Someone who compares prices across stores before buying anything.

As a careful pricewatcher, she never buys without checking three shops first.

4. A service that tracks market prices for businesses.

The company hired a pricewatcher to monitor competitor pricing.