I always use Digital Printing for my zines. Great quality, fast delivery and easy to use. Their prices have nearly doubled compared to when i first started using them, but i don't think you can find cheaper, depending on what you used them for. They offer points collection discounts but they are not made with small businesses in mind unless you order a massive amount of copies all the time. Overall, i really like Digital printing and i will keep using them for the foreseeable future.