I got my subscription with Tesco vouchers. Chances are I won't renew as, like others have said, most 'hobby' magazines do tend to repeat themselves each year.
If they sorted out the pricing of digital versions of the magazine I might change my mind. Right now it's £10 more expensive to get a digital version through Newsstand than to get a normal subscription. £40 for something they don't have to physically print or post to me, or provide cover items for is completely ridiculous.