They aren’t NFTs because they are inherently fungible. At thier base they follow the same structure as real Crypto currencies except they don’t have a way to mine new coins. In that way they are the same as NFTs.
Effectively the LGBT people made 300 trillion EtherRocks and started selling them on the market.
I assume that that is based on the market price at the time. GIven that the current value is about 5 million coins per dollar and that price is lower than it has been, $500K amounts to no more than 2.5 trillion coins or a less than 1% of what they created for themselves.
Of course the price is just based on the price point where sellers meet buyers, and when the market starts out with an inherent monopoly market manipulation is baked into the system.
Speaking of which I just became a paper Trillionaire while I was writing this. I just put a piece of paper in my pocket that said 10,000,000,000,000 Godot_bucks (the currency everyone’s been waiting for), and then sold my wife a piece of paper with 1 Godot_buck written on it for 30 cents. So according to the market I’m worth a cool 3 trillion bucks, hopefully no one tells the IRS.