Just been into my local tesco store (Hull) and found a 6 box of Johnsons wet wipes for £5.00 making each pack £0.83. From what I can remember they were the 64 pack which totals 384.
The single packs retail at £2.36 each (and are on a BOGOF at the moment). or £1.18 each
Think that his is only instore as I can not see it on-line.
Hope that this is a help to some.