Contemplation of a drawing

Original aspect ratio size:
20 wide x 23.9 high inch ($248.00)
24 wide x 28.7 high inch ($279.00)
30 wide x 35.9 high inch ($345.00)
36 wide x 43 high inch ($432.50)
48 wide x 57.4 high inch ($673.50)
72 wide x 86.1 high inch ($1,371.00)
86 wide x 102.8 high inch ($2,265.00)
100 wide x 119.5 high inch ($2,650.00)

Standard size:
16 wide x 20 high inch ($210.00)
20 wide x 24 high inch ($248.00)
24 wide x 36 high inch ($310.00)
30 wide x 40 high inch ($380.00)
36 wide x 48 high inch ($485.00)
48 wide x 72 high inch ($862.00)
72 wide x 108 high inch ($1,880.00)
86 wide x 128 high inch ($2,650.00)
100 wide x 150 high inch ($3,680.00)