Invitation printing: actual printer vs Office Max-type place

I couldn't find invites that worked with our colors/theme that I liked, so I designed them myself and bought paper from Paper Source that matches perfectly. I'm ready to get them printed and I know a local print shop will print them and cut the paper to size (I'm doing 5x5 cards with a 5.5x5.5 square backing), but I'm wondering if a printer like Office Max or Fed Ex could do just as nice a job for a fraction of the cost. Anyone have any experience with either or both? TIA!