I chose Android 9 and the Samsung Galaxy S5 phone. Do I have to pay to root it here?

✅ NO. Android 9.0 images are already rooted by default, so you do not need to pay to root that device. For Genymotion SaaS, root access is available on Android 9.0 and 8.0, while Android 10+ is where dynamic root toggling matters. See How to root a Genymotion virtual device? and Root Access.

If you want, I can also tell you whether the Samsung Galaxy S5 template itself is available in your current product.