New price low. Amazon has the 2-Pack 200-Count (400-Count Total) Nature's Bounty 500mg Magnesium Tablets (Unflavored) for $17 - 35% off coupon (check "Save an extra" box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel at any time) = $9.91 with free shipping on $35+ or with Prime.