depends what kind of print you want I guess. If it's photographic type I don't know really.
If you want it poster like then some of these little print houses have poster printers that give dcent quality (from a good source image of course) and don't cost the earth. A place I use cost about £40 for an A1 poster.
Where abouts are you located mate? I work for a signmakers and we do posters for advertising purposes for customers, surely there must be a digital print firm nearby? We print upto 2m wide by any length.