Tesco appear to be discontinuing their packs of 10 discs and have reduced the price to £5.97. This deal is available on-line and in-store. The in-store purchase makes more sense as better prices are available from the likes of Play.
If you need discs this weekend, this could be the best option for you.
Discs I bought are DVD-RW made by INFOMEDIA A20.
(Link to page so you can examine the good before going out in the rain.)