We've shied away from displaying $$ signs on our front page, as the Weebly service is very much free -- we don't want to create a perception on the user's part that they have to pay to use the service.

On the other hand, most users run into our "upgrade" form organically, when they try to use a Pro feature, and are offered the ability to upgrade -- this is a very logical point for the user, when there is already some form of demand.