I think you'll be jumping up and down in your vintage cowboy boots once you hear this, just don't drop your vintage Chanel!!!
I hold the key...to...Okay, I'll stop. Basically, asos once again (I really love that website, incase you hadn't gathered) have come up with an answer. If you can't afford the classis Ray Bans, then you don't have to. For just FIVE SQUIDLY POUNDS...you can get some very good look-alikes. But be quick, they're on sale....Available in black/tortoiseshell.
The REAL Ray Bans
The Asos Imitations >>>