If I were a painter, I would paint me the hell out of some van Gogh. In every skill I've practiced seeing what the masters do, reproducing it (especially figuring out _why_ they did it that way) has been a very useful learning technique.

More to the point of your post, and this story: Would I sell my van Gogh copies? Probably not. Not because I think there's something terribly wrong about it. Mostly because they'd still be inferior to the original.

I would certainly give them away to friends who wanted to hang it in their den or library, though.