Tommy Trouble and the Magic Marble

Tommy Trouble and the Magic Marble is a children's novel written by Ralph Fletcher with drawings by Ben Caldwell. It was first published in 2000.
Plot summary.
Tommy who loves collecting needs ten dollars to buy a magic marble from another boy. He tries to pick flowers from his mother's rose garden to sell to a neighbor. He also tries to trade his little brothers snake. Tommy finally decides that the magic marble is not worth the trouble.