"An ink eye beast... Selling an ink eye beast..." On the streets, many people were selling gene races. Ink eye beasts were the best-selling ones at the moment.
Han Sen asked around as to why that was. He was told the Gold Crystal System was too shiny. Continued exposure to the light led to damaged eyesight. If people had ink eye beasts, their eyes could be shielded from the harmful effects of the light. Also, in the light, they were able to see further than normal.
Whichever noble went to dig gene eggs in the Gold Crystal System typically possessed a gene race like that. If they did not have one, they'd fork over the money to purchase one. Otherwise, if they entered the God Crystal System, they could be rendered blind.
The ink eye beast was only a baron gene race, but it cost 10,000 for each one. It was more expensive than the average viscount gene race.