Yea, I’ve been eyeing a box like that, looks like it could be useful.
Yep, it’s all tradeoffs, gotta know what you’re shooting for. My Pi cost $5, I’m using an old phone charger (I have many), and an old microsd. If anything fails, I just grab another from the junk box.
All I know with my current use-case is I can’t measure the power consumption with the tools I use. I imagine that means under 5w draw (not really sure what it’s capable of measuring).