After reading the post below I did the math.

I considered how many active months I feed which is nine. I figured out what it takes to keep an Indigo at a good body weight just above that of a healthy wild adult, say one chicken chick every three days (just for a baseline). Size of my colony fifty breeders (mostly Spilotes in my case) by the way they eat more than Indigo. So here goes the math 10 chicks a month X 50 = 500. Now lets figure nine months worth of feeding per year 500 X 9 = 4500 chicken chicks per year. Price per chick .50 cents $2250 is just the food bill conservative might I add, the rats are more expensive. Now figure out what your hourly wage is in cleaning water bowls, removing snake feces and freshening substrate (priceless).