bluGill

Get lucky - just as this was starting I saw a failed disk notification on my NAS so I ordered a new drive just before they went up. Then I realized it was a stale notification for the drive I replaced a year ago so I have a spare should one fail.

somebody is going to want cash in

Maybe. The hard drive makers have long experience with boom-bust cycles. They are likely trying to figure out if this is real, or just a blip and in a two years (when the new factory opens!) demand drops again.

If there is new capacity in the future my guess (guess!) is that this is a case of a new factory to replace the old, and they just keep running the old for another year instead of scrapping it right away.

Start with a problem. What you trying to solve. Hosting music is different from backing up your computer. That is different from a home dashboard.

Because I have no idea if the questioner is going to do that beforehand

If you compare the cheapest burger to the most expesnive cut of steak or something they are. Often people do make such comparisons because they that is what they are cooking at home vs what they eat when they go out. You can buy premade frozen burgers you just microwave to cook as well - I've only seen the price in vending machines where they are more than a fast food burger but you can get them at grocery stores too.

But if you are cooking real meals with similar ingredients it is cheaper to cook at home.

Gfci or rewire.

If you put in a gfci I'd connec the ground to the metal box - wood is not a great ground but with the gfci doing safety purposes wood is enough for some things that want ground (that is a shield). If you can get a ground wire to enough places connected to enough different points it will fool most ground testers - remember that this is only useful if a gfci is providing safety and your goal is to fool the other reasons you want a ground.