If there's "some differences" then perhaps this guy just made his own version of the prop that the graphic artist who worked on TOTAL RECALL designed? You copied this graphic artist's work, and perhaps this guy on ebay did, too? Yeah, maybe it sucks to see someone selling things that you gave away for free, but I don't imagine the guy is getting rich selling them. Think for a second how the underpaid graphics guy feels who probably spent weeks designing and redesigning that graphic for a difficult director who wanted revision after revision... He's probably thinking, "Hmmmm, if that guy sells 5 of those things, he will have made more money from that graphic than I did. And he didn't even have to go through the nightmare of trying to please all of the department heads, a director, 4 writers, 3 producers, 2 production designers and a propmaster."