Ecco la risposta di wired

1) Select issue within app youve already purchased, but would like on
your device. NOTE, the issue will indicate that you have not purchased
it yet and will have a "Buy" button. This is fine. Continue on.

2) Click on the "Buy" button to begin the "purchase".

3) Apple will ask for you to sign in to your account in order to make
the purchase, do so but make sure the account you use is the same as the
account you originally purchased the issue on.

4) You will receive a pop up notification that states: "No Payment
Necessary. You have already purchased the issue. Touch Download to load
it to your device. OK"

5) Push "OK" and then the "Download" button.

Mrvl about WIRED Magazine, v1.6