Sainsbury's - Sandisk Ultra 64gb microsd (*Price glitch)
There seems to be price glitch in Sainsbury's on Sandisk Ultra 64gb microsd cards.
They are usually priced above £21 in almost every website and store. Amazon and ebay are selling the same card for £22.
This was first seen at Sainsbury's store in Hamilton, Lanarkshire
and then was also seen at few other places but not available at all places. So do check out the nearby Sainsbury's and see if luck favors you.