Nathan Meador , Apr 23, 2009; 01:02 p.m.
There are a lot of online development options, I sell photos thru smugmug and they use 2 or 3 different labs, and offer gloss/matte/lustre/metallic paper for standard print sizes (all well within your budget). You can also get canvas and other materials from various online labs. Just have to look around. I've not used mpix.