I've been on the lookout for cheap Head and Shoulders anti-dandruff shampoo and finally found it today. I know 250ml for 99p has been posted before, but I haven't come across this anywhere.
Today, 99p store in Sheffield city centre had lots of Head and Shoulders shampoos of many different varieties, all 200ml in size, for 99p each.
Bargain to me, since the normal price of a 250ml Head and Shoulders shampoo is £2.99 - I had to spend that much a few weeks ago!
Here's proof of the deal - http://imageshack.us/a/img197/3676/29092012922.jpg.