12 x 10 inches - 200$.

16 x 12 inches - 400$.

20 x 16 inches - 600$.

25 x 17 inches - 800$.

30 x 20 inches - 1000$.

40 x 20 inches - 2000$

+ 30% for every additional person on one painting
+ 30% for extremely high amount of details and intricate design of clothes.