Slave Redemption When the Supply Curve Is Not Perfectly Inelastic When the slave redeemers enter the market, the demand for slaves increases and the price rises from $15 at point a to $30 at point b. At the higher price, potential slave owners demand just 600 slaves, or 400 fewer than before—that’s the good aspect of slave redemption. But at the higher price, slave traffickers increase the quantity of slaves supplied from 1,000 to 2,200. The slave redeemers free 1,600 slaves, but 1,200 of these people would not have been enslaved had it not been for the increase in demand; thus, on net just 400 slaves are freed.