theres no real difference between them,blue phase were supposed to be less common in captivity to the normal green phased gippys,funny thing is all i see is blue phased gippys these days,i would love to get some green phase ones,i remember going camping up in gippsland once and the green ones were all i saw,beautiful looking colors,price wise between them i dont think there is,only between gippys and easterns,ill try and get a pic soon,the only ones i have u cant see there coloring as there hibernating in the pic and they all live outdoors so grubby on top of that