When it says 'Profile Picture', the little icon of the Avatar is pointed at. As can be see in the Twitter video, it shows that users can go to the Avatar editor right next to 'Customize' and 'Shop ...

Here is the Headless Horseman's sales history in Roblox: October 31, 2013 - November 3, 2013; October 10, 2014 - October 30, 2014; October 1, 2015 - November 3, 2015 ...