Let’s find the price of Monalisa.

Search results for “Leonardo Da Vinci” – 60,200,000

Search results for  “Monalisa” –  21,000,000

Area of Painting (30 in x 21 in) –  4.375 Sq. ft.

Condition of painting – Excellent

So the price of  Monalisa is : $1,065,750,000

The important thing here to understand is that the price of a painting is primarily driven by the artist and the artwork. Area of painting and the condition act as a multiplier.