I found a very cute French website the other day that sells stickers to put on your walls. They have posters too, hand numbered limited editions of 100 copies. The website is called Harmonie intérieure, and here are a few examples of what they have to offer:
There is a colour chart you can choose from, so that you get the appropriate colour for your home.
Here are a few examples of the posters:
The post costs are not too bad at all, for Europe 10 €, for the US 17 €. They have a wedding service too, they’ll print menus and invitations and all sorts of things you might need. So, go and have a look!