The best way is to order the images on canvas, shipped in a tube. They would then need to be put on stretcher bars to be hung. The size will depend to a degree on the shape of the image. Primarily, the image would be approximately 42” x 28” with minor variations. Cost: $725 incl. shipping and taxes
They may also be purchased as photographic images on Epson Presentation Matte paper. They would be mailed in a tube. The size would be approximately 21” x 14”. depending on how the image is cropped. With a large mat and frame the size will be about 30” x 24”. Cost:$495 incl shipping and taxes
A third way would be to discuss with the photographer any special sizes and pricing.