How rare is a maneki-neko adopt me?

Excuse me, but could you possibly shed some light on the rarity of a "maneki-neko adopt me"? I've heard of the traditional maneki-neko, the beckoning cat figurine believed to bring good fortune, but the "adopt me" variation has piqued my curiosity. Is it a relatively common item, or does it possess a unique charm that makes it stand out among the myriad of collectibles in the world of good luck symbols? I'm eager to learn more about its scarcity and any special significance it may hold.