I am going to have to challenge your statement. The pricing appears to be on average 50 cents cheaper, but their home page is a PR0 which leads me to believe they are a new company trying to get started. All the best to them, but I would stick with a known champ like cafepress.
One thing I do like about customdropshipper.com is their selection. They seem to have all the stuff cafepress has and then some. I applaud them for their creative magnets, puzzles and golf ball markers.