Bought these yesterday in my local Tesco. Very cheap at £3.41. Probably a pricing glitch as 30 tablets were £4.38. Superdrug sell them for £13.60!
What's more Tesco have a 3 FOR 2 on vitamins etc giving an equivalent price of £2.27 if you buy 300.
This is my first post so apologies if things don't look right!