1 Average total costs for a do-it-yourself installation of basin, pump, gravel and cement can run $150-$350. 2  Labor to replace an existing sump pump with a similar new model runs around $50-$150 or more. An average installation of a sump basin and pump (not including drains) runs about $250-$600 for parts and labor, depending on the quality of the equipment, ease of access and local rates.