Single post in A Beginner's Guide to Happiness and Fields.

Hi! I just wanted to ask you, is there a specific amount of credits that the price of a field increases by each time you buy a new one? Like, by how much does the price increase for each new field you buy? Is there a specific number or is just at random? Because, I am planning to hoard some Pokemon and I already calculated about how many fields I need, and I want to earn that amount of credits before, buying any fields. If possible, can somebody please answer me? Thank you in advance.