Thank you for the response. I do not particularly enjoy the hunt for my perfect kitty - I'm just as happy with "the best" of 5 options, as with "the best" of 5000, as long as "the best" is one I like - but I understand that for someone else it might be the main attraction.
Mainly posting to toss in another possible idea (that I like less than simply lowering the prices or adding charges, for selfish reasons). If you send a perma-petted kitty to the menagerie, you get a perma-pet pack back in return. This would keep a perma-pet kitty a valuable commodity, take advantage of the breeding nature of the product, and encourage the secondary market. Not to mention make it easy for us who think "ok, I'll take this cheap kitty until I find my perfect one" to adopt a kitty, and then when we find that perfect kitty we purchase another pack because we've fallen in love with our "temp". And the breeders would be able to always keep a certain number of favorites for sentimental or show purposes, without having to worry if a certain trait set might be worth the purchase, long-term.