Here's the deal. You have to find him. He'll be running several adventures during the Gen Con, and he'll also be found hanging out with Doug Kovaks at his booth in Artists Alley. At these spots, he'll "giving away" a few products, including a limited amount of Crawl! zines and T-shirts from Purple Sorcerer Games. And by "giving away", it means you'll have to battle in The Great Gen Con Dice Off! But you don't have to take any chances, he'll be selling copies of Crawl! for me. As a bonus, you can get all three available issues as a bundle, and get a copy of the Reference Sheets risk free.
UPDATE! COLLECTORS TAKE NOTE!
I failed to mention that as a special GEN CON bonus, all the copies are signed by me, and every copy is signed by some of my regular artists, editors & writers. It's worth noting that #1 & #3 are signed by Brett Miller, the writer and artist for his iconic creation and Crawl! fanzine patron, Van den Danderclanden.