The average slave price is 150s, add or subtract accordingly.
Race
Human +0
High Elf +70
Wood Elf +70
Fae Elf +100
Drow +50
Dryad +50
True Dwarf -90
Gnome +20
Leprachaun +50
Feral-Shifter +80
Mini-Shifter +80
Appar-Shifter +80
True Mage +80
Sorcerer +80
Necromancer +80
True Orc -100
Goblin -10
Imp +50
Werewolf -50
Werecat -50
Angel +100
Demon +100
Incubus +100
Succubus +100
Anthro +100
True Fairy +60
Pixie +60
Sprite +20
Centaur +80
Mermaid +80
Drider +80
Neko +60
Inu +60
False Doubutsu +60
Vampire +40
Ghost +30
Halfbreed = The average of the two race's prices.
Age
Child (between the ages of 12 and 15) +10
Adolescent +70
Adult +70
Middle-Aged +0
Old/Senior -20
Apperance
Ugly -60
Iffy -50
Average +0
Fairly Pretty +10
Cute +20
Pretty +40
Beautiful +70
Breathtaking +90
Average Skill Level
1 -300
2 -200
3 -100
4 -50
5 -30
6 +0
7 +70
8 +100
9 +200
10 +300