I have been ordering products from zoomin.com for more than 2 years now and I have never been disappointed. Products that I have ordered are: collage poster, posters, zigzag mini(discontinued now), photo magnet and flipbook.
Most of the times, I have availed discount. They have always delivered quality products and on-time. On any query or feedback, they have always provided good customer service. I would be using their service in future as well.