Thieves in ebay

It's being a while since my last entry over here. First Happy New Year to you all!
However I start this year in such a bad manner, the nice sent me a private message with a link, the following.
www.ebay.com/itm/Supernatural-…
This dude, had the brilliant idea to stole my art of Sam and Dean to sell it in ebay without any permission and gain moneys from it. Now it's nice to know that someone would love to buy my art and, I swear, that I can sell them as well if you require me directly. However he is gaining moneys from stuffs I spent hours to do, the thing is pretty frustrating.
So from now on all my art will be watermarked with DA marks.

AND

I'll sell the images of my artworks you'd love to have/buy with very cheap prizes on card size 4x3 inches.
So please don't buy counterfeiter of my arts. You just improve thieve-ring and doesn't help the artist who make them.
Just advice me if you see more of my arts stolen for any reason.
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[b]edit[/b]: so it seem this boy/girl bought the cards from another seller.. wow what a big trip! Well I'm glad to inform you and the sells man that I'll be glad to sell them MYSELF to you all from now on. Stole them again and you get big issues. I'll be sure to put my trademark on the originals from now on. I'll go more deep in this situation and will contact the other seller.

However I have to spend a good word on the one in the link: he/she was very glad to cooperate with me, I'm glad to find people nice enough to admit their guilt.