I wanted to grow a Bonsai Tree and bought this kit, not one thing grew, as other have said buy an established plant.
These will take years to grow into something that resembles a bonsai tree. Better off buying a more mature tree such as this one: https://www.amazon.co.uk/d/Bonsai-Plants/Chinese-Bonsai-10years-Oriental-Bonsai2u/B01N8YLLUF/ Remember, they need to be watered every day, sometimes more in the summer, so probably not good for kids unless they're very dedicated or an adult can take over when interest wanes.
Just buy a book and some tree seeds on eBay. Note There's no such thing as a "Bonsai Tree" so don't go thinking you just plant it then in a few years you have a small woody tree 🌲 🌲. (y)
Not very good reviews on this for those thinking of buying