At one point I had 2 Zebra finches. They quickly became 5 Zebra finches...then 8...then I decided I didn't like mating pairs anymore, so I sold the whole lot for what I paid for the original 2 and the cage. Total spent on birds, cage, 8 months of food, and a second cage...$80 or so USD. Price for flock and cage at sell date...$25. Damn those were a noisy bunch.