A buddy of mine is getting into printing images. He has a large format printer and can print images of up to (as I recall) about 17" wide and about as long as you like. He is very anal about color accuracy and whatnot and cares a great deal about doing this the right way. He puts a lot of care into the process. He is just starting out, so is fairly economical. I'm having him print all the images for my upcoming show and the quality has been really incredible. Feel free to reach out to him to discuss specifics. His email is: alan (at) belander (dot) net. Please forgive my link disguise.