4,178,772 exp to 99 4,178,772/185 = (22,588 grey chins) x 495 = 11,181,060 gp 4,178,772/231 = (18,090 red chins) x 840 = 15,195,600 gp Formula for chin conversion is Grey exp/chin x 25% = red chinchompa (185 x .25 = 231), assuming you are using void w/ eagle eye. Then throw in some more money for the prayer potions and range. Grey are definitely more efficient.