"feedly pro will be generally available this fall for $5 per month (or $45 per year). To help kick-start the program, we are offering a limited lifetime edition which gives you early access to feedly pro and grants you a lifetime membership"
— description from their website.
A good deal for people who use RSS feeds a lot. Some articles covering about this:
http://www.engadget.com/2013/08/05/feedly-pro-subscription/
http://www.androidpolice.com/2013/08/05/feedly-launching-5-p…
http://www.theverge.com/2013/8/5/4589764/feedly-pro-premium-…
It's hard to know if this is a deal before you can actually use the pro service. To be honest, I don't think HTTPS and article search is worth much, let alone $99.