I'm afraid that I really doubt there will be any of the boxed ones out there anymore. You would be more likely to find a boxed leprekitten but the price for that will be really quite considerable, 50K-60K total minimum. Even as a live, they get well over 50K
You maybe already know, but the leprecats will not have any special babies as that occurred at the time they were out, when a small number gave birth to leprekittens. I have a few live leprecats if anyone is interested (they just live in my inventory nowadays which is rather a shame) and will keep my eyes and ears open for any boxed ones of them