I had Honey for YEARS back when I was still on Google Chrome and it never saved me money on anything, I could even find codes after 5 minutes of Google searching that it didn't have. Recently decided to try it again on Waterfox and had the same experience. It never saved me anything and half the time I could manually hunt for a code and find a working one myself in 5 minutes. The extension asks you to make a Honey account and based on the description for the extension itself this seems to be mostly so it can track you and sell anonymized data, but that may still be of concern to privacy conscious individuals. Personally I do not recommend Honey, I think you are better off using your preferred search engine to hunt for codes yourself.