I can't see it .. oh wait there it is ,.. In what regard ? fixed wiring substitute ??
What is your customer going to use it for?
Didn't I just say that? :wink: I've sold several, both on installs I've done and outright sales to other installers.. . . you could put the same parts together IMO and do exactly the same.
I noticed that, too. Besides, that recessed receptacle won't accept angle plugs, and may not accept all straight plugs.(Although the inlet pictured there in the OP appears to be a cord cap....)