If you can't turn Safe Price off without losing all of the other browser plugin functionality, then Avast is adding this annoy you so you'll pay for the full version of the product- otherwise the option in the menu would say "switch off Safe Price" instead of "switch off Safe Price for 24 hours". What is this... Facebook?
Thanks Avast, it's been a pleasure using your product for free for several years now, but this new annoying thing that I cannot turn off will be just enough to get me to move on to the latest and greatest new free product from someone else.
If you made one product and made it well, I might consider buying it, but this one has become so bloated, pop-up ridden, and full of cartoony nonsense, gallows day was coming already anyway. Take a look at XnView or VLC player, for examples of tight design and keeping in scope: years of production, and they have yet to find a need to include a toaster oven and 40 subscriptions to Vibe.
And, an advance reply to that little beam of sunshine who replies to everyone complaining about this: I'd suggest you get a job, but it's clear your job is to post upbeat replies to all the complaints about this.