After the Winter Wolf Boy got auctioned successfully, a couple more servants followed after him.
Most of them were from different races, which weren't really that high up in the SGAlliance Power/Authority Tree.
If they were to be placed, they would utmost have a tiny branch just like the Human Race.
Naturally, those Races in the ruling power would not be sold in any public auction like this since it would offend the race they belonged to.
Those Races at the top like the Witch Race, Dwarf Race...etc, always had fewer numbers but they were more united than ever unlike the Human Race and others.
They couldn't accept that one of their own people was enslaved by a lesser Alliance member.
Hence, each of them had created over the years countermeasures against the slavery contract and those who kidnapped one of their kin.