IDW will have several exclusive Comic Books for San Diego Comic-Con. One for each day in fact. It is not know beyond the picture descriptions if you have to go back each day to get them, or if they are only released one each day of the show. I wouldn’t chance it on the first couple as I am sure A and B will sell out each day. The exclusive version of G.I. Joe Real American Hero #264 Silent Master Variant A-E will be at the IDW booth #2729 each cover will cost $25 each or $125 for the set if you can get them all.