Never buy your AV licence on eBay ! I bought both KIS and Norton 360 on eBay earlier this year. After some issue on my laptop, I had to format and reinstall the OS...a very commun operation for a Windows user. I was unable to activate my licences again, the activation limit was exceeded ! I contacted Kaspersky support which informs me the code I bought was given by a famous bank to their customers... Idem for Norton, the code was earlier sold to another person who already registered herself on Norton Account database. Kaspersky's support tells me there are numerous persons who sell illegally licences on eBay. I got mine for 20 USD for 1 year, now I know why it was so low. Thankfully, there offered me a brand new code My experience is pretty simple: NEVER BUY YOUR LICENCE ON EBAY, BUT ALWAYS IN BOXED VERSION OR DIRECTLY FROM THE EDITOR ONLINE STORE.