Help me finding a piece if merchandising

[madrivi]

Well i dunno if it has been around for some time, but i saw it just some hours ago and i have been looking for it in eBay, etc, it is the cloth patch that Mike Mearls and Jeremy Crawdford have on the table at GenCon, the Link that i followed was a Twitter one in the Wotc website, it is an hexagonal red patch with the words Dungeon Master and the Dragon ampersand...

Please help me fellow adventurers!