Typically the 8GB packs of (2x4GB) have ranged from £30 on special offer days to just over £40. This is the lowest I've seen the 16GB pack (4x4GB) at a fantastic £64.53. I have just bought these myself. It's marginally better to purchase the 16GB pack rather than 2 x 8GB packs as the 16GB pack is selected knowing they work well together (since there are slight variances between all cards). **This is for desktop computers**
Great buy with free delivery from a reputable seller, quality product, lifetime warranty, all at a very good price!
Please refer to the following site for product description:
Hope this helps someone!