The 2013 retina model comes in 2 versions, I found out when i had to replace mine, I did not purchase from that link you gave but we did purchase them from replacementlaptopkeys.com, the direct link for the keys is [http://www.replacementlaptopkeys.com/servlet/the-22119/Macbook-Pro-Laptop-Keys/Detail|apple retina laptop key]
We ended pulling off one key and compare and the keys they sent to us was a perfect fit, and install could not be easier, it took seconds.
Jojo