Its difficult to eliminate a condition like median annual income being between $3000-4000 - Rhino horn goes for $100,000/kg to the end user, so even assuming 20

Its difficult to eliminate a condition like median annual income being between $3000-4000 - Rhino horn goes for $100,000/kg to the end user, so even assuming 20% for the poachers that several yearly wages split up among a few poachers.