Wired is having a New Year's Sale, 50% off a 1 year digital subscription being US$5. You can also choose to the have the dead-tree version shipped to you as well for a total of US$35. GST didn't apply when I ordered the former.
Your subscription will auto-renew but cancelling auto-renewal is easy via the Customer Care portal at https://w1.buysub.com/servlet/RegistrationGateway?cds_mag_co…. No idea if they store credit card details but it seems like they silently do; they're not shown anywhere and there's no option to set or update them if they do.
Thanks for the info, just have to remember to cancel the auto renewal.