A coffee dispensing device is provided with a transport device (300) that couples various components for the processing of unroasted coffee beans together. For example a roaster (200) may be coupled to a grinding and brewing device (400) to enable the transfer of roasted coffee beans between the roaster and grinder/brewer. Also, the transport device may transfer the roasted coffee beans from a roaster to an output port (800) so that roasted coffee beans may be obtained. An automated coffee transaction device (ACTD) is also provided to automate aspects of the purchasing of coffee. A service delay projection calculator is also provided to estimate the expected wait time of a customer entering a queue.