Good Morning Scott, Thank you.
I am just a small part of a large company, the supplies are the "deal of the moment" provided by purchasing.
I ask for stock from purchasing and they shop it out.
As for the expense of deep boxes it is a non issue for us (that may change if steel keeps rising) in our market it is all about speed, the faster the better.
We have standard procedures for doing things and deep boxes are one of those, we always feed the switch so minimum 3 12/2s per switch box add to that a typical wall mount motion sensor and maybe dual switching.
By always using deep boxes the guys do not have to stop and think about box fill, you need to add a cable, go ahead and do so.
I am not saying our way is the only way, just that it works for us, employees can be rotated through different jobs and it is all the same for them.
In some ways this stinks as some guys become no more than assembly line workers, but some are happy not to have to think.
The ones that want to think get better assignments, control work, Fire Alarm running a small crew etc.