MANCHESTER, England, 2017-Aug-23 — /EPR Retail News/ — Savvy students can “bag” an extra saving at their Co-op food store with NUS extra and Co-op Membership. NUS extra cardholders receive a 10% discount off their groceries at the community retailer. In addition, students who also become a Member of the Co-op will gain a further 5% reward on purchases of own-branded products and…