I am trying to figure this out as well. originally I planned on reselling xbox one and ps4 day 1 editions but with the initial negative press for MS, I routed my extra one to a relative without any profit.
as for ps4, I am torn between ebay and CL.
remember with CL to meet in a public place. I have friends who meet in a bank or police station to make the exchange. Always let the employees know beforehand.