Corn oil is cheap and available at costco. A sous vide is a fancy french name for a $150 device from target that keeps water at a specific temperature...
This "simple process" is much, much simpler than most meals one cooks at home. It's not much harder than microwaving something.
You are missing the point. With a small change in the way you do something, the really good thing can be made.
Sous vide are even cheaper now, $30 for a basic one, provided you've got a stock pot or something large enough to set it in.
You need something to vacuum seal the food. Is that included in the $30?
That can be just a ziplock bag and the same water bath you're going to use for the sous vide anyway.
https://www.youtube.com/watch?v=XrZPLF0ezw8nn
you really don't for most things. Ziplock is fine for things that take an hour or two.
I read corn oil while I expect 3 star Michelin steak. What are we talking about oO