Heading off topic for a moment, I recently ordered a large format print of a favourite photo.
The end product is nearly 1.2Mt x 0.9Mt, and I am very impressed with their work. The print is suitable for a range of displays, and it cost under $13.00AUD. That price included postage within Australia, but I see more recent listings show an additional post cost. They can do prints of up to 3Mt x 1.5mt. My photo wasn't even a good resolution image, so a high res pic could look stunning. The photos are printed onto a fabric material that is easy to work with, and stated to be very hard wearing.
Here is the particular listing.
http://www.ebay.com/itm/LARGE-FORMAT...IAAOSwBP9UVP1t
And here is my photo.
I have no association with this company, but just had to bring their work to your attention.
I figured most people would have a special photo or two, that they would love to see enlarged. At $13.00, it's a very reasonable way to make that happen.