My grandfather has an indoor orange tree that he has been cultivating for almost 20 years now. Every year it blooms and gives off at least a few dozen oranges. And they are some of the best oranges you have ever had.
But it is a lot of work maintaining a tree like that. Obviously, orange trees are not made to grow indoors so they resist the environment. He has to inspect and car for the tree on an almost daily basis. He seems to like it but I would probably just go to the store and buy a bag of oranges