Uma ukhetha ukukhokhiswa konyaka, uthola isaphulelo esikhulu uma kuqhathaniswa nokukhokhiswa kwenyanga. Isibonelo, uhlelo lwethu oluyisisekelo lubiza u-$3/ngenyanga ngokukhokhiswa konyaka (okukhokhiswa njengo-$36/ngonyaka), okukongela ngaphezu kuka-40% uma kuqhathaniswa nokukhokha nyanga zonke.