I think that giving the kits 3-5 charges would be awesome. I managed to get two of the sale bottles, which I'm saving until my kitties are old enough, but it seems weird that the kits are so expensive. Especially the 120 kits because we have kept a cat for it's entire breeding life (and likely made more cats that we're feeding).
I guess the logic was that similar nonbreeding cats sometimes cost that much, but I think we've paid a lot towards this already, especially for people with 120 day old cats.
I don't know about other people, but I don't make money with the kitties. I just use my sales to help support my kitty habit.
I'm still spending money. It's kind of a shame that we can't realistically keep more kitties as permapets, kind of as a record of our love for the kitties. If it were, say 300-500L to permapet a kitty, I could keep all of my favorites, instead of the two that I'm planning to keep (which have been on pet food forever anyway). Right now, I'm just going to permapet my limited edition cats, but I wish I could keep my breeders too.