AVG is a pretty decent security product and is among the most popular free antivirus utilities. The free version is quite capable. However, if you are looking for more complete protection, the premium internet security suite is the way to go.
Normally, 1 year license of AVG costs £39.99 ($64.57). However, thanks to this special Christmas offer you can now purchase it for only £7.95 ($12.83). This amounts to a whopping 80% discount.
[Technically, it is actually a 77% discount, since AVG Internet Security is available to US users for $54.99 on the official website]
Amazing discounts are also available on other AVG products. Take advantage of these offers while they last.