I think you should at least try to sell them. For how much I'm not sure. If you can find compatible paintings on that site see how much they are asking for and if they've ever sold any. If their is a market for it people will buy it.
You can definitely try, but I do not think people would buy those. They look neat and all, but it looks like anybody could have made them. I'm really not trying to be mean here; I'm just stating my opinion.