I was able to get these for a bargain at a local discount shoe store; even so, I would pay full price for them if I had to.  I've never owned such a comfortable, yet lovely pair of sandals.  I tried on an 8 when I am an 8.5, and the 8 was a perfect fit, so I'd say go down a half size if you can.  The sole kind of reminds me of Birkenstocks, only smoother and softer.