First time user

I've bought the 20$ pro and didn't turn on the On-demand usage, there's no indicator that it should go off from my quota of 20$, but in my usage it is already showing 80$ for the first 2weeks, does that mean I would pay it off? but it has a word "included" so I'm assuming it's still under my 20$ subscription if it does then how does it make sense business wise that i would pay 20$ for a 80$ usage

https://preview.redd.it/68a2iw5dp2vf1.png?width=1234&format=png&auto=webp&s=84a37be5888461886d311e7af3e328c923faabf7