Pampers New Baby all three sizes reduced from £17.96 to £9.73 for two economy packs. Even cheaper if you subscribe.
Sizes 1 & 3 (total 108 nappies) = 9p per nappy
size 2 (total 124 nappies) = 7.8p per nappy
Sorry, no pic at present as am posting on my phone. Will add shortly if I'm not beaten to it!