If you see any gen 0 kittie at 0.02 ETH thats incredibly cheap. I think you were supposed to say 0.2 ETH?

So catatonic cats have a longer time interval inbetween breeds. Catatonic is 7 days, were swift is about 5 minutes. Each time your kitty breeds it takes longer between each.

Each kittie also varys by its traits as well which can change their cost significantly.