With my pets I set a base price. My base is 50g.
Then I take a look at the traits and set a base price for each type/color of trait.



For example this pet has 3 green colored traits and 2 purple colored traits.
I've decided the prices for each trait color should be:
Green = Carried = 10g
Blue = Visible = 50g
Purple = 2 Traits in the Same Slot = 75g

Next, I look at the level my pet is on, and I add 5g to the price for every level or 25 every 5 levels.
Then I simply add it all up.



For my pet Mysticis you would add 20g for the carried traits, 150g for the double traits, and 60g for the level.
So based on my pricing method she would be worth 280g.

Feel free to use this method to price your own pets and change it to what you think each section should be worth. ^-^

would it be okay if i edited this post of mine to include current themed pet prices? id like to help make this a complete guide to pricing. if not, i'll edit it to be an accidental post :>

Sure, that's ok. You can give credit to me if you want to use the whole thing. I'll check yours out once you're done because pricing themed pets is something I need to know.