While conducting this study, the cost of plantation for sea
mango is unavailable because there is no large-scale plantation of
sea mango for commercial purpose. Thus, the cost of plantation
for sea mango was estimated by referring to the cost of plantation
for mango due to the ecological and biological similarity of these
two plants. Apart from that, the plantation cost for rubber is
negligible because rubber seeds can be obtained abundantly as
by-products from existing rubber estate.