https://enaming.com/recent-sales
https://www.dnjournal.com/ytd-sales-charts.htm
https://www.namecheap.com/blog/top-domain-sales-of-2021-so-f...
Wormhole is a cool sci-fi word. A fun word that most people know and don't already associate with another brand. It's high tech, it's something at the frontiers of science, it's fast and futuristic. Easy to spell, easy to remember, and easy to build a new brand around.
"Galaxy.com" recently went for $1.8m, apparently, and that's like a better version of "wormhole".
Comparing to recent sales, I'd say Wormhole could easily go for $800k+. With the right buyer, maybe upwards of $1m.