McAfee wanted £59 from me on an annual renewal.
I ditched them and simply use Windows own AV and CrapCleaner for a sweep down. Having said that, I don't trawl dodgy sites so I didn't feel McAfee was VFM.
Personally, if you want to buy AV software, I'd be looking to pick them up when they're on offer for thirty quid each year.
But, as the above post says, there are free products out there, too.