Are they selling goblins? Can you sell goblins? Aren't they intelligent creatures with their own will? Is this an ad for slavery? Quick! Someone inform the Ministry of Magic!
ONCE is a charity for the blind and visually impaired (Focusing on the integration of the blind to different workplaces) that sells lottery tickets in spain.
http://en.wikipedia.org/wiki/ONCE
So it no coincidence that if you close your eyes this thing ist just a cute tune.
Um... guys... I wasn't being serious. I found that it was about a lottery and felt that it would be humorous to suggest that instead of understanding that it was about money that I believed that Goblins exist and that this camera crew had finally proved me right!
Obviously the Goblins represent humanities dreams, which we are all constantly chasing as we run through life. Some people catch them, most merely cage them, only a select few people conquer them and feast on their entrails.