I already have a print subscription, why am I paying for the digital version?

I already have a print subscription to this magazine, which I like, so when I saw they had a digital version and an app for the iPad, I thought "Great!". Not so much. The app is free, but each issue is $4.99 which is WAY more expensive than the actual print version where I can get a two-year subscription for 20 issues for $19.80. So two questions - why is the print cheaper than the digital version and why dont print subscribers get free access to the digital version? Im cancelling my subscription to this magazine because this just seems so wrong on so many levels!

Eaha.Bhan about Women's Health Mag, v1.3