I am member on Bitsler and it pays 10% referral commission on house edge. House edge is 1%. So, he probably mean that you earn 0,1% of the wagered Bitcoin, Ethereum and Litecoin. Correct me, if you mean it differently.
bitsler.com have affiliate program 0.1%
0.1% from what? from total wagered amount? from the casino profit? or something else? Please be more specific if you want to post something.