Is there any actual possible way to get rid of these type of people?
Sadly, there isn't. Because people will always try to make a "quick buck" in the same way someone else will try to get it as cheaply and easily as possible. I see it a lot in my career field of Cosmetology. Salons who perform services they know they shouldn't for the soul purpose of getting the money... Sadly, more often than not, we end up having to fix the mess they cashed in on and more often than not for a lot less than it really should have cost to fix in the first place.
Greed is a common thing and some people believe that if they can get a hold of molds or a finished suit to cast that they could sit back and roll in the money while doing the least amount of work possible. They don't realize that selling the molds, the kit, or anything for that matter without a license could hurt them in the long run. After all we are dealing with copyrighted material here and US (Along with the bulk of the rest of the world.) Copy-right law requires any instance of selling/buying copyrighted material that goes unchecked threatens the copyright holder's claim to their own copyright. They way the court sees it is if I don't defend my own work then why should they? It's like the whole Mojang v. Bethesda case earlier this summer. Notch knew Bethesda really didn't care about Scrolls but they had to make the case for future lawsuits down the road. This is why Mojang never took the lawsuit "seriously" and instead let the Lawyers hash it out.
To me I think that is why the original creators and forum members of 405th take this so seriously. It isn't as much as, "Oh hey this guy is trying to make money off something I made." Instead it's more, "Oh hey this guy is using kit I made to make money. If they nail him then they can just as easily turn a case around on me for making it in the first place." For me it's sort of the Elephant in the room that most new members are oblivious too. They think it's all about the money when it goes much deeper than that.
I'm kind of rambling I realize but the whole jest of it is this. I make a mold for myself for use in personal cosplay or what-ever. I get tired of using it so I give the mold to someone and they turn around and start making pieces and selling it. Unless he's got the license from the original company or the copyright owner to reproduce this he can be sued. Since he got it from me in the first place he can throw it back on me and really at that point it's just my word against his. We're all drug into litigation and this is why everyone is so protective over molds and pieces. Wash, rinse, and repeat with another member and his mold later down the time-line.
Regardless, my point is this. People are just f*ing greedy and if they think they can make a quick buck off you they will. As Sheri Lewis and Lambchop would say, "It is the song that never ends; It just goes on and on my friend."