browsing in staples for a 17 inch laptop case and having no luck i found a couple of nice deals on memory sticks as follows:
8gb sandisk blade for £7.50 - cheapest i have ever seen on the times posted here.
8gb sandisk ultra backup for £12.50 - good if thats what you are after.
Was in a clearance display along with a few cheap routers so may well be store specific (they are not online as far as i can see) but as i cant check every store i'll leave that to you to find out.
hope this helps someone.
(i would have bought but missus wouldn't allow it lol)