Casino is one of the most popular keywords when it comes to domain name sales. I had written a few years back that when you look at exact keyword sales, Casino leads the list with 75. $7.1m in dollar volume with $94.1K being the average price. $5.5m for Casino.com was the high sale.
Two word casino names also have done very well and today we saw a huge one. CasinoBonus.com closed at $199,000 at GoDaddy auctions. It ranks 6th all time in Casino related domain name sales at Namebio. This was not a backlinks play, there are few according to Ahrefs. Casino-Bonus.com is a developed website.
According to DotDB.com CasinoBonus registered in 193 extensions. This is a niche I know very well. With online gambling legal in more and more states, people are inundated with casino bonus offers. This is a highly competitive niche and it will be interesting to see who won the auction.