if you were to buy avast then install it could youy install it on a difrent computer from the same account or would you have to buy it again?
The license is based on individual systems, and the number of systems can be increased. For instance the Avast Internet Security application has a good price as it can be used on up to 3 systems.
The avast Pro version license can be purchased for 1 or more systems.
So it depends on what version you buy and how many systems the license purchased is for.