Number of people / pets per portrait?

The number of people or pets that we have we have to convert into pop art affect the price, we charge an extra $30 per person or pet. For multiples of the same person this is no additional charge. For example the 1st would accrue an additional fee of $60 for the extra 2 people; the 2nd image is just the normal fee and so is the 3rd image is all 4 panels are the same girl