I am making assumptions here, just wanted to say that straight away

One of my favorite "features" of KittyCatS is that the starters are no transfer.
Overall, the Valentines kitties are starters in a costume, we were able to see what was under the costume when they bred. By necessity they needed to be transfer because not only were the colors random, but so was the gender. If you wanted to even up your V-Day kitties by gender (or get a certain color) you needed to trade or buy.
I was a little disappointed to see that the St. Patrick's Day kitties are transfer. As I said, I am assuming they are starters under the costume again. This time, however, there is only one costume and you can buy a single cat in a specific gender or a pair. There is no need to buy or trade on the secondary market.
On a positive note, I bought my kitties this morning and I LOVE THEM. They are adorable, beautiful, nothing less than I have come to expect from KittyCatS.