Hi,
Sorry for the delay in response for your questions but I just got to this forum yesterday and now I am here to help.
The casinos are the same.
Mostly British players get that bonus cause when the use a search engine it comes up for them.
If you are interested in offering the $10 bonus you just need to have a prime partners account and you can promote the normal Prime Casino.com
You jut have have to tell me there VPCR number. So every day email me the players numbers that have registered and I will credit their account $10.
email me at ryan(at)primegaming.com
if not an affiliate yet register here: http://www.primepartners.com/?ref=6586815
Thanks
Ryan