My research reveals that Matt Frank is working on a fan comic, of which this is the cover, but it's not completed yet, apparently, as you have to subscribe to his Patreon in order to see the pages as he finishes them. In May he posted he was inking page 9, June was doing Page 10, so I imagine he has a ways to go? Sadly, in following him over to DeviantArt, he said the comic would not be ready in time for G-Fest and also that the comic would not be available for sale on-line! WHAAAT! That's right, only to be sold in person at cons he goes to. What kind of shenanigans is that man?
Whoever got that cover probs bought the original work.