I guess you found somewhere to purchase it

You need a license for each system that the application is running on.
The reason that the pricing is different than Davin and I suspected is because they have Kapersky 7.0 out now. Version 6 was cheaper.
Getting 3 licenses for 10 bucks more is crazy. Probably a mistake that they will fix, or maybe not.. It's a great deal and I'd jump on it.. Actually, I MIGHT jump on it! lol.
I was going to say check out the 30 day trial and then make the purchase so you get an extra 30 days for no payment.. but at that price, instead of risking them changing that price, I'd buy now.
-James Oliver