Not possible at the moment
check this thread
Currently its not available, check scottwills post in thread, last post. http://themeforest.net/forums/thread/what-does-this-theme-on-this-page/134858?page=4
... Policy on Item Transfer Between Two Parties
As for our policy on transferring items/themes between owners, we do not presently have one. Our immediate focus right now is to better understand the technical aspects of these transfers before creating a policy around that. We do have a few more tests scheduled in the future, but won’t have an official policy for several months. What we do currently have ‘policy’ on, that you may have already seen in our forums, is that we do not allow discussion of item sale/transfer in our forums. When we see these threads, we disable them but we keep a record of them internally for future reference. With this in mind, we politely request and suggest holding off on posting any item transfer requests in our forums or via a Support ticket until we’ve determined the best way to move forward with this and provide a fair and reasonable solution that benefits our community.
Thank you so much once again for observing this issue and sharing your feedback with us and we apologize for any confusion or concern this may have caused....
What are the features you look in a theme for plumbers?
Regarding the Digital Ocean hosting
I’m planning on releasing a theme here soon
Can the $10 / month plan handle the Themeforest traffic (2TB Transfer) or its better the 20/month(3TB Transfer)