I've been playing for 3-4 years and have only gotten 2 $20 prizes. I wasn't sure it was even possible to get the 10000.
If you asked it a few years ago then the answer is very possible.
In this thread
https://bitcointalk.org/index.php?topic=1850855.msg65174600#msg65174600 some time ago still posted successfully getting $200 or 10000, the rest is only $20, but if someone succeeds in getting it, will it be easy to withdraw it? with all the problems in this casino.
But I have never gotten 10000 even 9998-9999, the best I have ever gotten is only $2.