Maybe left over / part of the baby event - barcode 4 015400021001 on the side of the green box
I went to my local Asdas yesterday and they had these boxes of pampers fragrance free baby wipes. Inside the box are 3 sealed packs of 4 baby wipes so 12 packs in total. The price is £4.57 which works out less than 40p a packet!
Thanks to melonpop0 for reporting this fab spot and also to dreb23 who confirmed spotted in a different store -'Quote' - just got them in Caerphilly store - they arent the sensitive ones - they are the green pampers wipes - they were at the back of the store in the baby event section - the boxes dont scan then when they enter the bar code it comes up as 4.57 - in the baby aisle itself a 4 pack is the same price - so its a glitch - the boxes (3x4pack) have the same price bar code as a normal 4 pack.
Picture for info only