Original Works Price List

I've found that the easiest way to price my work is by final size. Here's the current cost of my originals.
8x10: $100
11x14: $200
12x16: $250
11x14: $200
12x16: $250
14x16: $300
16x20: $400
18x24: $500
16x20: $400
18x24: $500
20x24: $600
22x28: $700
24x30: $800
22x28: $700
24x30: $800
30x36: $1200
32x40: $1800
32x56: $3000
32x40: $1800
32x56: $3000