And here's something that also involved wrking with girl's face, but doesn't quite fall under happy category, just indifferent.
I saw this picture of a random(?) girl buthcered and on sale and it looked just a bit like Ayanami Rei, so what I did it colored her hair, than I also changed the face to one of Rei from manga and finally colored her eyes too.

If I were to put any story to this one... a few options that come to my mind are:
1. It's on 50% sale because it's only Rei's clone. Which assumes real Rei's meat is sold or was already sold somewhere else at full price.
2. The previous one only allows to sell one Rei at full price which doesn't sound like a sell, but rather the clones having full price and the original having doubled. So the other option is that clones are sold at full price when Rei's memory backup is loaded into them before they are butchered. So the meat was a living copy of Rei at some point. If they don't load the backup and just butcher a mindless doll than it goes for 50%.
3. I was sure there were three ideas, but I can't remember the third... anyway I remember it was almost similar to the second one.
I don't really like any of those as they all mean we see only Rei's clone on the picture.
I'm also thinking it might be an alternative ending to "Asuka and Rei Grocery Shopping" (check my thread on /lit/ it it doesn't say anything to you). After Rei's legs and arms were cut off and sold, after some time she died of blood loss, and because it's not living meat anymore that's why the price is halved. The picture contradicts some moments of the story though...
Well, whatever, just a bit of thinking aloud.