The stickers for the upcoming Major Eleague Boston have just been released. The items are available for purchase within the game as well as from the 50 mega bundle which contains all the teams stickers / bundles, etc.
Half of the money earned from sale of stickers and graffitis will go towards the teams and this will ensure that the teams can stay financially viable in the future. It forms a significant amount of money for the teams and hence remains a lucrative opportunity for all.