Another option could be to buy a magazines.com gift card, and use it to purchase the magazine subscriptions so that they do not auto-renew. I *think* I did this last year with the United portal - I got a $100 GC and subscribed to New Yorker and Wired which was almost $100 for both of them. I wanted to read both of them, so this worked for me.
Don't forget that for most magazines the print subscription includes access to the web/iPad version. I am usually outside of the US, but have a US address with family, so this worked out very well. We *both* get to read the magazine - my family gets to read it in person and I get to read it on my iPad wherever I happen to be in the world.
T&C do not preclude purchasing GCs so it is worth a try.