Unfortunately, by the time he saved enough money, Lego had discontinued making that set.
So the boy wrote a letter to Lego which his father posted on YouTube asking if Lego could help him find a set. Lego wrote back apologizing, but restated that the train was no longer being made. But several days later a box arrived at his door from Lego. With a hidden camera, his parents recorded the whole thing.
"I finally have it! I finally have it!" said
Lego sent him a set along with a letter thanking James for his loyalty to the company. The boy is convinced Lego is the best company in the world.