{"id":"GSX:AFR-003:A02","local_id":"A02","name":"Contestable share and retention","statement":"About US$7.1 trillion of the central market is treated as contestable by external suppliers. The retention case keeps 52 percent of captured sales as South African value added.","value":"52","unit":"percent of captured sales retained","type":"model assumption","provenance":"Manuscript Part I","evidence_strength":"scenario","sensitivity":"high","alternatives":["A lower retention rate"],"href":"https://greyscienx.com/research/african-convergence/the-factory-for-african-urbanisation/assumptions/A02"}