gimmeshoes.com, barneys, some neiman's stores because i've seen them at neiman's last call, yoox.com sells last season DVN, brownsfashion.com, farfetch.com, and nordstrom's!
it you know which pair you want, go to nordstrom's and ask to see the book- they'll order you whatever you want.
Their website looks a little wonky, but they are a legit store. I was just there literally an hour ago and they are having a major sale. Lots of DVN included. They also carry much more in-house than they show on their website.