Fair point but still a good price for this particular toothpaste which I have never seen sold for less than £2.
I'm prime member and if I only want to buy this deal as posted and advertised, ie sensodyne for £1.16 it would cost me around £5 when all pantry stuff comes into account. So you can't get this for £1.16
If you're not Prime etc, Arm and Hammer Enamelcare is similar (came out long before this afaik) and can often be had for £1.50ish from the likes of Wilko/Boots/Superdrug/Sainsbury etc. http://www.mysupermarket.co.uk/asda-compare-prices/Dental_Products/Arm_And_Hammer_Enamel_Care_Sensitive_Pro_Repair_Toothpaste_Tube_75ml.html
care to elaborate?