I have a question for you, is it worth buying Avast internet security? I ask for both critical and positive answers. 
Avast internet security is not a thing anymore, and avast premium antivirus neather, now the only thing you can purchase is premium security or ultimate.
Here you can compare the features of the products that are available.
[b]https://www.avast.com/en-us/compare-antivirus[/b]
Only you can decide what is best for your needs.
Let me be the Devil here ;D
A basic free setup I would recommend:
- Avast Free
- Windows Firewall Control https://www.binisoft.org/wfc
- Sandboxie Plus https://www.wilderssecurity.com/threads/sandboxie-plus-sbie-fork.427755/
But it doesn’t include everything Avast Premium Security offers.
Greetz, Red.