Why not have the ability to add custom fields for the people who log everything or the ability to hide fields, personally I wouldn't want to see data such as scientific name, length, temperament, shed or poop dates. I would never record them. As for market price, I think you would need fauna or kingsnake to feed data to you, which with their current system, I don't see how they would be able to do that.

Also what platform will this program be available for?