In the 1770s Philadelphia had a well developed indentured servant market which served the city and the surrounding region. This market had many attributes of rational labor and physical capital markets and provided a means for financing migration and education. This study is of indenture records which include prices, term lengths, employer-provided amenities, and servant attributes to test hypotheses based on a rational buyer model. Results indicate that in response to the riskiness of a servant, the buyer used indexes of servant productivity and reliability; that the servant paid for amenities offered by the master, such as general education; and that there was a seasonal pattern of prices corresponding to seasonal activities of agriculture.