I think NF is definitely worth it but I run 6 characters with plans for more and am good at phone. What are your phone sex skills? NF has a bit of a learning curve to put it mildly and can be a rough start if you're new. I've been on there quite awhile & am still finding out new things or stuff I'm been flat out doing wrong.
In a nutshell yes it's worth it but whether it will be worth it personally for you will depend on you. If you are a American and set up for their version of daily pay(which isn't usually actually daily lol) the minimum payout is only $10 though.