I again bought a book, a Geronimo Stilton comic book, that RJ read for less than 30 minutes. Only. With the price that I had to pay for that book, I thought he would finish longer than that. But come to think of it, books are investments also, right?
I'd rather buy books than toys for RJ. He learns a lot with books. He gets to know important people, he can travel to anywhere he wants, he can do new things (eg. origami) just by reading a book.
So yes, buying that Geronimo Stilton book is an investment that I shouldn't regret.