Yes, Airgarden is a legitimate company. It's a Queensland-based sustainable start-up that has developed a vertical, aeroponic gardening system. This system allows you to grow over 150 different types of herbs, fruits, vegetables, and leafy greens in less than one square meter. The company was founded by Prue and Tom Bauer, who were inspired to create Airgarden out of their passion for homegrown produce and its sustainability and health benefits. The company's products are sold on Amazon under the brand of getbear. They have received an average star rating of 4.7 from customers. However, as with any online purchase, it's always a good idea to do your own research and read reviews before making a purchase.