Manheim data and services can be accessed only by licensed dealers or employees thereof. Data provided by Manheim is restricted only for use “by Licensee for its own internal business purposes.” It could be argued that sharing this data privately with a potential client could be considered internal business purpose. However. those who may have shared this data have done this more as-a courtesy. There are a few facebook groups (see: WCC) running Manheim threads, maybe visit one of them, if you want to play in the grey area.
Keep in mind there is a free Black Book link shared in the “value your car online” thread: