As far as I know you can't purchase Instawatch codes, you have to link a Walmart & Vudu account and then any eligible physical purchases are added to your Vudu account automatically.
I don't think I've bought one since Movies Anywhere overshadowed Ultraviolet but all of my prior Instawatch...
Are these all HD? If they are I am interested in
Warcraft UV $3
Peacher Season One UV $5
Mike & Dave Need Wedding Dates UV $3
if they are still available. Thank you.