Amazon has the 100-Count Puritan's Pride Magnesium 250 Mg Caplets for $4.15 - 15% off coupon (check “Save an extra” box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel anytime) = $3.32 with free shipping on $35+ or with Prime (extra 15% off for 5+ subscribe and save orders).