MY daughter bought a dress from Reiss high street store (£145) a few days ago. Selfridges are now selling the dress for 30% discount. The receipt from Reiss store says that you can return the purchase within 14 days for exchange or credit note. We want a full refund so that she can buy the dress in Selfiridges and save over £40! She's a student! What I would like to know is can they legally not give a full refund?