The economic implications of reintroducing gorillas into the wild can be both good and bad.
On the good side, the presence of wild gorillas in an area can attract ecotourists. These people will come to observe gorillas in the wild and will (presumably) spend money that will help the local economy. In this way, reintroducing gorillas could help the economy of the area in which they are reintroduced.
However, gorillas can also hurt the local economy. This is particularly true when the local economy depends on agriculture. If reintroduced gorillas destroy the crops on which the economy depends, they will (obviously) have a negative effect on the economy.
So, reintroducing gorillas into the wild can have both positive and negative impacts on the economy of the area where the gorillas live.