Sainsburys have reduced Kamillosan Ointment to 79p a tube. It normally retails for about £5 (Mothercare are selling it for £4.99)
The cream is used by breast-feeding mums to help soreness/cracking, and can also be used to help wiht nappy rash.
It's based on lanolin and chamomile, so is quite popular as it's considered more 'natural' than some other creams. Reviews of the product are generally good. I have used it myself and found that it works well.
Hope this is of use to you