Laboratory market experiments are used to estimate the incidence of a stylized subsidy in factor market negotiations with university student and agricultural professional subjects. In separate sessions with both groups, prices converged approximately four and a half tokens higher when a 20-token per-unit subsidy was paid to buyers; this equates to 44% of the predicted 10-token split. A proportional market incentive treatment clarifies this subsidy effect. Discrepancies between predicted and observed incidence are similar to previous empirical estimates of subsidy incidence in agricultural land rental markets. A behavioral anomaly as well as buyer-buyer market competition may contribute to experimental results.