£49.99 for some in Zara sale:
The below are also Zara and £49.99 in the sale again.
These are the only ones I can find as I'm after a pair myself to be honest.
The second pair are probably a bit better than the first (IMO).
Aldo used to do a really really nice pair that went down in the sale months ago to a stupidly low price - but I had no money at the time and when I did they were gone. Kicked myself ever since.