Receive a $5 Amazon promo credit when you spend $100 or more on Amazon gift cards and enter the code GCMUM5 at checkout. That’s an effective discount of 4.76% off.
Amazon promo credits can be used to pay for future purchases you make on Amazon (subject to some conditions).
4.76% off is quite a good discount for Amazon gift cards these days but the big limitation with this offer is that you can only earn the promo credit once.
Credit to Hiphopopotamus on OzBargain for spotting this offer.
