Surprising how many have 10,000$+ invested!
Holding bitcoins worth 10,000$ does not mean one had to invest 10,000$...
Exactly.
Question in thread title and one you posted does not really match. There are people who have a lot of bitcoins but invested no fiat
money in them directly but through buying mining hardware, electricity bills and so on. I bought not a single Satoshi by now, but I'm
close to you top category. How? Faucets (bitcoin giveaways) 1%, mining 4%, doing some actual work for bitcoins 95%. So your 1st
question applies to me, but 2nd not.
You should clarify what exactly interest you.
Im asking how many USD your Bitcoins are worth. duh