It's way too variable. You can have different examples of the same morph sell for $150 and $1500 in the same season. It really depends on factors like sex, size, color and quality, as well as supply and demand... Some areas may be flooded with a certain morph while that morph could be in high demand in a different part of the country... A lot of people recommend using Kingsnake or Fauna classifieds to get an idea of what a morph is going for, but really, it's all about what the seller feels the animal is worth and what the buyer is willing to spend on the animal they want.