Well it was only last week that JB Hifi was offering this very deal, and they must have had a good response as it’s on again!
Until this Sunday (19/5), you can get 20% off iTunes cards at JB Hifi Stores. The ad says in-store only, but as you can see, they also seem to be offering the deal online.
Thanks to James who sent this one in.
[Source: JB Hifi]
Other known gift card promotions:
[20%] Target – 20% off iTunes cards – ends 19/5