Comixology BOGOF Sale on Marvel Titles

From the email i received;

For a limited time, buy any number of Marvel comics and collections and get an equal number of Marvel comics and collections of equal or lesser value for free. From sensational single issues to epic collections, now is your chance to dive into the Marvel Universe like never before.

Use code: MARVEL at cart page

Offer expires 2/23/15 at 11:59 PM EST, or for select stores, in local time. Offer can only be redeemed on comiXology webstores.

Works out to be good if you've been holding out for a specific title to go on sale, or prefer collected volumes that never go on sale instead of the single issues that do.