Xero ShoesMen's Genesis Sandal - Lightweight, Minimalistic, Travel-Friendly

Is there a reason these cost so much? Bill of Materials does not seem extensive. Wondering if something is special about them.

Is the material for earthing? as in does the material allows for electrons from the earth to your feet?

When do you expect to restock size 13 Mens? Thanks!

How easy is it to get on and off? Can you do it one handed? Do the laces have some stretch?