Welcome!
I have ordered from them in my long past when I started out but don’t do so anymore. I found the corals I bought healthy but nothing as special as the picture (or wacky name) implies.
Here are some links of other opinions also.
Welcome! Extreme Corals IME sells average corals at very high prices using oversaturated/manipulated photos. Ordered once a long time ago and never will again. Several people I know have also had a negative experience with the owner.