We are going to start doing up the living room in a few months but looking around for things at the moment. I'd like to put wallpaper on one wall and have an idea in my head about how I envisage it. Along the lines of grey/silver geometric or wave/swirl print. I've added a few pics to get a general idea of examples. Can anyone help me find some wallpaper of decent quality that's inexpensive (on a tight budget). Not asking a lot am I? 
Thanks!