From  an article    in the Casino  Player Magazine ( several years ago)  the comp equation for roulette is :


30 ( spins) x .052  game  advantage )X $25  (average bet)  X 3 hours - $117.00 .


The pit boss might give you  a comp of $ 60.00.






Subject  to change and  locality. But a good guide line. Make use  of your players card.

Comps are very dependent on location. Vegas is stingy but Reno joints are generally very generous with the comp, hey hey.