Your search for "magnesium" revealed the following:

Sale price £96.35 Regular price £130.00 Sale
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Sale price £69.90 Regular price £90.00 Sale
Sale price £68.45 Regular price £90.00 Sale
Sale price £12.99 Regular price £20.00 Sale
On Sale from £30.85 Regular price £40.00 Sale
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Sale price £31.25 Regular price £40.00 Sale