Though the efforts of the Heroes of Tyr have help to lessen the amount of slaves in the Tyr region they still do exist. There are many different types of slaves on Athas. The most common classes of slaves are Work (which include Artists and Artisans, Domestic servents, Farmers, Laborers, etc.), Concubines, and Gladiators. All the costs below are average costs for slaves in Athas. Feel free to use them in your campaign.

Work Slaves

Work slaves make up the main force of slaves. They are mostly 0-level characters but in their great numbers a psionicist or mage could be left undiscovered.

 
 Aarakocra: 5cp (unsuitable)
     Dwarf: 15cp 
       Elf: 8cp (hard to catch if they manage to escape)
  Half-elf: 10cp
Half-Giant: 35cp
  Halfling: 7cp (sometimes found eating other slaves)
     Human: 10cp
       Mul: 15cp
   Pterran: 10cp
Thri-Kreen: 7cp (Very dangerous and don't get along with elven slaves)

Modifiers: +2cp per STR or CON above 15                           
           +1cp per DEX above 15
           -2cp per STR or CON under 8
           -1cp per DEX under 8
           /2cp if known mage or psionicist

Concubines

Concubines are slaves kept for the physical enjoyment of their owners. Concubines can be male or female and usually receive pampered treatment, for they are expected to pamper their owners in turn.

Aarakocra:  2cp (they are huge claustrophobic birds)  
     Dwarf: 10cp 
       Elf: 20cp
  Half-elf: 25cp
Half-Giant: 10cp
  Halfling: 15cp
     Human: 22cp
       Mul: 17cp
   Pterran: 2cp (for people who enjoy reptiloids)
Thri-Kreen: 1cp (no-one wants to meet this pervert)

Modifiers: +3cp per CHA above 15 
           +2cp per DEX above 15
           +1cp per CON above 15

Gladiators

The city-states that continue to hold gladiator games need their fare share of gladiators. They are trained arena fighters who live and die by the sword.

 Aarakocra:  5cp (hard to keep from flying away)  
     Dwarf: 30cp 
       Elf: 25cp
  Half-elf: 25cp
Half-Giant: 50cp (can take alot of damage)
  Halfling: 20cp 
     Human: 25cp
       Mul: 40cp
   Pterran: 20cp
Thri-Kreen: 30cp (hard to catch)

Modifiers: +3cp per STR above 15
           +1cp per DEX or CON above 15
           +5cp per three gladiator levels