Even if you don't eat the eggs, chickens help to balance the biology of the garden. They eat insects that think your garden is a place with no predators. Their scratching helps to build the soil. Everywhere they go they add fertilizer to the soil.
As for "the price of chicken feed", anyone who pays money to feed their chickens is not paying attention. There is
this thread on how to feed chickens on piles of wood chips. There is also the incredible amount of food that stores send to the landfill that could be feeding local chickens. If you don't generate enough food scraps to feed a small flock of chickens, I'm sure that among 3 or 4 of your neighbors you do.
I say take the chicks.