Not to be confused with the Royal Jelly Dispensers.
The first royal jelly the player buys will cost 250,000 honey. Each subsequent royal jelly will cost an additional 10,000 honey, eventually reaching a maximum of 1,000,000 honey per royal jelly.
The formula for the price of one royal jelly is
is the amount of royal jelly already purchased.
Royal jelly can be purchased in increments of 1, 10, 100, 1,000, 10,000, or 100,000.
Note that the prices below assume you are paying the max price for royal jelly.