The average slave price is 150s, add or subtract accordingly.
Race
Human +0
High Elf +20
Wood Elf +10
Fae Elf +70
Drow +20
Dryad +20
True Dwarf +50
Gnome -50
Leprachaun -50
Feral-Shifter +10
Mini-Shifter -30
Appar-Shifter +10
True Mage +10
Sorcerer +10
Necromancer +10
True Orc +30
Goblin +10
Imp -10
Werewolf -10
Werecat -10
Angel +40
Demon +80
Incubus +30
Succubus +30
Anthro +70
True Fairy -80
Pixie -80
Sprite -80
Centaur +20
Mermaid -20
Drider +10
Neko +10
Inu +10
False Doubutsu +10
Vampire +50
Ghost -50
Halfbreed = The average of the two race's prices.
Age
Child (between the ages of 12 and 15) -60
Adolescent +40
Adult +40
Middle-Aged +30
Old/Senior -60
Average Skill Level
1 -100
2 -80
3 -50
4 +0
5 +10
6 +50
7 +70
8 +80
9 +90
10 +100