How can it help you to speed up development but not be worth 10$/month. Your hourly rate can’t be that low.
You also have to (slightly) change your flow to get the most out of it, which I know is a deal breaker for many.
I absolutely love it. It's not going to write good code for you, but for an autocompleter it is amazing.
There's a limit to what individuals are willing to pay for a subscription service irrespective of how many hours it saves you. Now if we're talking enterprise and bulk licensing then that's a separate issue.