In comics, the first issue is where the story starts. But unfortunately, print copies of these issues can be hard to find and expensive to buy.

Marvel is making an offer many comic book fans can’t refuse by offering more than 700 first issues available for digital download.

Starting Sunday and ending Tuesday, the Marvel app and will allow free downloads of the issues. After Tuesday, they'll be sold for $1.99 to $3.99 per issue – which is still much cheaper than buying the real thing.

Read more: NationalPost.com