USE THESE LINKS TO KNOW MORE ABOUT DOMAIN NAMES.
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1) NUMBER OF DOMAIN NAMES REGISTERED IN ALL EXTENSIONS BY EXTENSIONS.
https://domainnamestat.com/statistics/tldtype/all
2) SALES HISTORY OF ALL DOMAIN NAMES IN ALL EXTENSIONS SINCE 2000 YEAR.
3) ONE OF THE BIGGEST PRIVATE DOMAIN NAME MARKETS, PRICES ARE QUITE HIGH. THERE ARE REALLY GOOD NAMES.
4) NUMBER ONE DOMAIN NAME FORUM, BUT A LOT OF CRAP DOMAINS LISTED BY BOTS.
5) MOSTLY NUMBER TWO FORUM, SAME CRAP NAMES, SAME BOTS.
6) LARGEST WORLD'S MARKETPLACE, PRICES VARY FROM MILLIONS FOR GOOD NAMES TO.... MILLIONS FOR CRAP. ....BUT CHECK THEIR "TOP" AND "SHOWCASE" SECTIONS!!!
7) TOP REGISTRARS (PLACE WHERE DOMAIN NAME IS STORED AND MANAGED). TRY TO REGISTER SOMETHING, OR TRANSFER BOUGHT DOMAIN TO THEM TO MANAGE. HERE ARE THE BEST OF THEM:
https://unstoppabledomains.com
AND SOME OTHER... THESE ARE MOST USER-FRIENDLY AND HAVE GOOD REP.
8) ANOTHER TOP DOMAIN PORTFOLIO. CHECK TO SEE HOW WORLD'S TOP NAMES LOOK LIKE.
9) CHECK THIS WEBSITE TO SEE HOW PRICES CAN BE REALLY HIGH AND HOW REALLY VERY STUPID CRAP LOOKS LIKE. THIS WEBSITE BY 99.9999999999% IS CRAP. BUT.... (DOMAIN NAMES ARE A-R-T).
10) JUST CHECK ENGLISH WIKIPEDIA TO KNOW MORE ABOUT STATUS OF QUALITY DOMAIN NAMES IN INTERNET.