If you want you can give a try to test it by yourself.
We managed to get it down with a very strong DDoS which i don't believe that someone would give that money for those booters and it was down for 10 seconds (almost 5 ppl got dc, others was inside w/o problems) and his ip got blocked and couldn't DDoS again.
If you manage to get us down i'm gonna give you my whole server