I actually got lucky enough to grab Avast Business Edition for free when they had the promo going. It doesnt have all of the features like Grime Cleaner, Firewall, ect, but I dont need those. What did go away was the thing advertising their other products, and it added features like remote scanning and reporting. If you already use other tools for free that do the same thing that its Pro version does then why add the extra bulk?
It really is useful if you are the main admin for your entire network and want to take the guess work away from other users. Trust me, everyone in our house is glad for that.
Sorry, off topic but that really was a steal and setishock reminded me of it.