In one embodiment a method comprises a method of determining a price level for a computer-based service utility comprises determining a base price for the service utility, determining a loss premium for the service utility, and adding the loss premium to the base price level. A single controller is capable of controlling and interacting with at least two separate air control systems to control an environmental characteristic, and in the process, reduces the costs associated with the manufacturing and every day operation of the individual systems. A needle holder with a needle mounted at one end thereof is arranged in the plunger channel, and movable between an advanced position, whereat the needle projects from a distal end of the nozzle for injection, and a retracted position, whereat the needle is enclosed within the barrel when the injection is complete. Flow control valves set the flow into the first initial product sub-chambers. The pair of hybrid operating modes including a first hybrid mode that supports a write interface configured in standard mode and a read interface configured in first-word fall-through mode and a second hybrid mode that supports a write interface configured in FWFT mode and a read interface configured in standard mode.