Hey Roadrunner. It sounds like you got caught up in some raw deal!!
So let me get this straight.... Some guy runs a shop, called Helmet Source, you make custom helmets and sell at his shop?
So he takes helmet orders from you, you make the helmets, you ship the helmets to him, he sells them to Johnny Biker off the net...
And then this guy at the shop doesn't pay you?
And Johnny Biker doesn't get the helmet?
So basically, both you and Johnny Biker pays this guy at the shop, and he sits on his butt and laughs at you both?
Man, if I understand you correctly, it stinks bad!!
Good luck in getting this sorted out!