Amazon Gold Box deals are absolutely, positively one day deals.
I've been using Kaspersky for about 5 years on all my systems and am delighted with it (though I use KAV, not KIS). Highly recommended. They update their definitions several times a day and all future product releases are free. You pay for annual subscriptions only. For many years I was a Norton bigot, but not long after Peter sold to Symantec I became a bit disillusioned with the product (primarily the widely recognized "bloat"). I still think Norton produces a solid AV product, but Kaspersky remains my absolute first choice. And their support forum is outstanding.