Review for Norton Mobile Security:
http://www.tomsguide.com/us/norton-mobile-security,review-2101.html
"Like many Android security products, Norton Mobile Security is a freemium app, offering basic features at no cost and more advanced protection for a yearly fee. Premium features are activated for a user's initial 30 days.
The premium license is $30 a year, discounted to $20 for a user's first year."
I am selling my unused key for $15 in BTC. That's 25% off the regular already-discounted price.
You can either choose to receive just the key via PM or email, receive a scanned copy of the physical card via email, or receive a the actual physical card containing the key inside via the post (as long as you pay shipping).