I love Dollar Tree Photo Paper if you want a glossy look. These look amazing and yes only a 1.00!!! Nice and think paper and awesome quality.
I also love Kodak gloss paper. It prints perfect. Not glossy, but with the perfect amount of shine for crystal clear images...They also have the perfect amount of thickness for a nice professional looking invite.
These can also be printed at your local printing center that prints on full sheets such as