I sleep better knowing that. I'ts worth the peace of mind. The short answer is yes. The flower is extremely rare. Should we suddenly be hit with demand that outstrips supply, there is simply nowhere to get more of them.
Magic flowers do grow indoors in pots.
They grow year round in warm climates too. They make wonderful Christmas and birthday gifts because of this. When people put them in pots to give them a head start on spring, or to give as a gift, I advise them to use 8 inch pots. Magic Flowers in huge tree pots in a glass solarium or glass patio are very entertaining indoors. However, they are purchased year round, often as gifts.