Acropolis has always paid me even when I had a $54 month 
So – they may have a $500 holdback, but they don’t appear to make use of it.
I may have to reconsider and talk with them about it, then. I guess it is not all bad. I just know that I get nearly zero conversions compared to MG casinos and all their aff programs pay me no matter how small the commission check.