I apologize if this information is somewhere easily found, but I did searches both in TF and Google and could not find the information.
If I purchase a theme (in this case an HTML template), and the author updates the theme with fixes, new features, etc., are these updates free, or would I need to purchase the theme again?
As long as an item is on the marketplace and receives updates, they’ll be always FREE.
You’ll always have free access to the latest versions of the files you purchase. When an item has been updated it’s just a case of grabbing the files again from your ‘Downloads’ section.