Before revision:  When intermediaries have private values, intermediated implementation can be achieved by a per-unit fee schedule that allows intermediaries to break even under the target social choice rule . When intermediaries have interdependent values, per-unit fee schedules cannot generally be used to achieve implementation, whereas regulating the distribution over sub-aspects can under general conditions about the target allocation .
After revision:  When intermediaries have private values, intermediated implementation can be achieved by a per-unit fee schedule that allows intermediaries to break even under the target social choice rule for consumers. We demonstrate the effectiveness of per-unit fee schedules cannot generally be used to achieve implementation, whereas regulating the distribution over sub-aspects can under general conditions about the target allocation .