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**Price and promotions are accurate at the time of posting but can change or expire at anytime.**
Subscription of 4 packs with the combined offer of 10% off voucher, buy 4 for the price of 3, subscribe and save, and buy 4 save 5%, reduces the price to £7.56 for 4 packs, thats £1.89 per pack of 40. Bargain, as usually each pack costs £3.60. Not sure when the offer ends.
