Dragon Auction

A Dragon Auction was an event in which dragons were bought and sold to the highest bidders. Two tribes, the Northlanders and the Dragon Hunters, were known to have these.

History
The Northlanders had an auction at their fortress in the Ice Needles. However, the auction was broken up Stoick, Hiccup and their fellow viking/riders.

Three years after the Berserker War, Dragon Hunter chieftain, Viggo Grimborn and his brother Ryker then had one at one of their ports. There, he attempted to sell of Toothless but lost his chance when Gobber, Hiccup and their fellow riders were freed by Grump.