Firstly it’s great when u buy an antivirus online because u can get great offers there . And if u wanna buy it offline u should compare the price . Because some shopkeeper may ceat you and asking u to give a higher amount that the antivirus worth that’s y u should compare the prices online and offline both
And the main tip to buy antivirus.
That firstly u have to see brand-name.
And then u can go for its features and the main tip is u have to check ur system configuration because if ur system has low configuration some antiviruses may slow it down so buy lightest antivirus as u can for a low spec pc
Otherwise u can go with anyone by comparing the price and features .!