The Recruitment Stones weren't some sort of hidden treasures in the Market. Several stores were selling them, but they weren't very popular for many Survivors unless they had a territory or perhaps if they were travelling alone and wanted a companion.
After all, these people consume resources, and their loyalty wasn't always at the top, especially if they were high-grade recruits.
If you did something bad, their loyalty could slowly go down until they betray you, or if you're lucky, they'd just leave without telling you.
"Special Recruitment Stone… or the Rare ones?" Tundra asked.
"Mhmm… Let's go for the Special Recruitment. Most of them are production-class Survivors." Reylin replied.
After all, the New Genesis Shelter was steadily supplying them with Warden Units.
From what Reylin could understand, the Project Warden was capable of creating 10 Warden Units every week.