Your search for "magnesium" revealed the following:

Sale price £179.57 Regular price £200.00 Sale
On Sale from £69.66 Regular price £90.00 Sale
Sale price £13.99 Regular price £20.00 Sale
Sale price £41.17 Regular price £50.00 Sale
Sale price £39.09 Regular price £50.00 Sale
Sale price £29.18 Regular price £40.00 Sale
Sale price £29.58 Regular price £40.00 Sale
Sale price £69.03 Regular price £90.00 Sale
Sale price £81.94 Regular price £90.00 Sale
Sale price £62.77 Regular price £90.00 Sale