The random drop CPS is 250 CPS per monster .... And you can take CPS potion to make the drop 250-500 cps per monster ..... The ( RANDOM ) "Extra" CPS its going to be 500 CPS per monster.... And its going to be there a day Suddenly day not Decided ( Per Week ) the cps is going to be without CPS Potion 500 and with CPS Potion 500-1000 .