Morrisons have an excellent instore deal for nappies just now.
I normally buy my nappies from ASDA and find that their 2 for £18 deal on jumbo packs is usually unbeatable.
However i was pleasantly surprised yesterday when my local Morrisons had an instore deal on the Mega packs.
Size 3 - 126 nappies (works out as 7.93p per nappy)
Size 4 - 102 nappies (works out as 9.80p per nappy)
Size 5 - 93 nappies (works out as 10.75p per nappy)
Size 5+ - 87 nappies (works out as 11.49p per nappy)
They didn't have any size 4+ in my local store (which is what my lad is on) so i just bought the next size up as the deal is so good.