Quote Originally Posted by mattp169 View Post
No you are not quite right but close
for the dragon
when you buy it
you get 8k hp
then 2500 exp takes it to 1 star and adds another 8k hp for a total of 16k hp
then 5k more exp takes to 2 star and adds an additional 8k hp for a total of 24k hp for a total of 7500 exp
then 10k more exp takes you to 3 star and adds an additional 8k hp for a total of 32k hp for a total of 17500 exp

to the best of my knowledge the exp form one level to the next doubles and the hp added is a constant base amount.

So $438k dollars in gems will get you a 15 star dragon
or 5 free feeds a day for 442 years will get you a 15 star dragon
yes i miscalculated.

however, it would be nice to see the accumulated experience spent per hp gained.