I was going to do a rather large project with them, but I found that I couldn't actually speak to a person. When I chatted with somebody on their website, they were apathetic, absolutely no help and didn't care if I walked away or used their business. I ended up using aura-print.com, and they were FANTASTIC... the opposite of this ridiculous company that just wants to take your money and run.
Products used: I was intending to print A7 birthday invitations in full color, on cardstock with foil printing. I tried to use their interface to design it, but it was so clunky. It wouldn't allow me the control I needed to produce a satisfactory output. When I reached out to them to find out if I could submit it to them already completed via upload, they told me no and said that I could go use someone else. So I did.