Having used Copilot for a year now I very much doubt this figure. In my experience it only works well in boilerplate kind of situations where most code is copy/paste work anyhow. As soon as the code gets a little complicated it stops working well. It has also gotten quite slow for me lately. So I doubt it increases my work efficiency by more than 5%, but I do like it for reducing strain on the hands. For that I find the price appropriate.
> In my experience it only works well in boilerplate kind of situations where most code is copy/paste work anyhow.
As a data point, this matches my personal observations. But reducing the time spent on that bolierplate plus not needing to search where the "copy" portion comes from, may justify $30/month (and probably much more than that). My 2c.