Originally Posted by
Mod
Codestone training only goes up to lv.250. After that, you go to the Ninja school, which as of now, is significantly faster and cheaper than regular codestone training (even if regular codestone training allowed beyond lv.250). Thus lv.333 to 3x HP couldn't work in regular codestone training.
The prices you listed are only if the user is ball enough to go stat-increasers like Aneggs, ASPs, and Sneggs, which is excessive in cost. Ninja training can do it all at a fraction of the cost.
HP is also the most common stat increase in the lab (frequently +4/+5 HP, and can never decrease from a zap). With the Lab Ray cookies, it can mean zapping HP up to that level in 1/3 the time too.