It's not 10x by any means but it doesn't need to be at most dev salaries to pay for itself. 1.5x alone is probably enough of an improvement for most >jr developers for a company to justify $1000/month.
I suppose if your area of responsibility wasn't very broad the value would decrease pretty quickly so maybe less value for people at very large companies?
Using Claude Code for one year is worth the same as a used sedan (I.E., ~$12,000) to you?
You could be investing that money!