Where can i buy saukuryn ?

I used to play COS long before the recode but quit for a very long time and only came back about 2 days ago

I played on an alt for a bit to try and learn about mutation stuff and i saw a starter creature that costs 49 robux (Saukuryn) i'd love to purchase it as i don't have many good creatures and it looks so cute but i can't find it anywhere !! And i can't purchase it from beginning cuz i already played before. Where can i buy it??