Hey! I forgot to mention in this post that I used rich black for my business cards instead of C0 M0 Y0 K100 and I got fantastic results. (For those of you who are not design nerds, using only black when printing instead of mixing black with other colors often yields a washed-out dark grey).
Before I placed my order I did some digging and I found a post about using rich black with Moo. The Moo admin suggested using HP’s recommended rich black which is C40 M40 Y30 K100. I used it and it is dark and beautiful, and my cards are not even coated.
The photo further illustrates the difference between rich black and black only. Just FYI for anyone trying to print solid black with Moo! Hope this helps.