High quality prints at a
High quality prints at a low cost. I ordered 2 large custom sized poster prints. Great customer service. There was an issue with my first set of prints and their crop settings. After contacting PosterPrint they immediately sent out a corrected printing and declined when I said I'd pay for the extra S/H. I also thought the website warnings when your image resolution is too low or if your aspect ratio doesn't match the output settings was a nice touch. A lot of other websites ignore this feature.
Assuming the source photos you have are a decent sized resolution you'll be happy with the end result.