The only option available for it is to either enable/disable it. There is an EXTENSION for Avast! Online Security (.75) installed however but there are no settings available for it. When I go to Firefox “Add-ons” there is NO plugin listed for Avast in the list of plugins. In fact, nothing at all happens when I left-click on that Icon.
If I left-click on that circle, there is no window which opens up for Safe Price settings, either on the right or anywhere else on my screen. I assume it is for the Avast Online Security Plugin settings. There is a green circle icon in the upper right corner of the navigation toolbar which is unlabeled. I am having the same problem using Firefox 27.0.1, that is that I cannot disable “Safe Price”.