These products are found in the Core catalog under prints and enlargements. The paper type option (watercolor, canvas, etc.) is under options/paper type.

Size Watercolor Canvas
5x24 $ 35.99 $ 57.50
5x30 $  39.99 $  61.50
8x8 $  5.69 $  31.80
8x10 $  5.69 $  31.80
8x12 $  9.79 $  31.80
8x16 $  10.99 $  34.20
10x10 $  7.49 $  31.80
10x13 $  9.99 $  31.80
10x15 $  11.29 $  34.20
10x16 $  11.99 $  34.20
10x20 $  22.99 $  39.00
10x30 $  43.49 $  94.20
11x11 $  11.29 $  34.20
11x14 $  11.29 $  34.20
11x16 $  16.19 $  39.00
11x17 $ 16.19 $ 41.00
12x12 $  10.59 $  31.80
12x16 $  13.59 $  39.00
12x18 $ 16.19 $ 41.00
12x24 $  37.99 $  67.80
14x22 $  39.99 $  81.80
15x30 $  59.99 $106.20
16x16 $  37.49 $  69.00
16x20 $  37.49 $  69.00
16x24 $  54.99 $  82.20
20x20 $  55.99 $  82.20
20x24 $  56.99 $  82.20
20x30 $  65.99 $106.20
20x40 $102.99 $179.50
24x24 $87.49 $118.00
24x30 $87.49 $131.20
24x36 $117.99 $158.00
30x30 $117.99 $173.00
30x40 $120.49 $180.00
30x45 $141.49 $210.00
40x40 $219.99 $240.00
40x50 239.99
40x60 $249.99 $252.00
48x72 $279.99