Dear Ayesha, yes it is cost effective because, cost has to become a more comprehensive thing, we have to evaluate it on every factor; there must be some changes in production and processing. And you find the Organic farming in cost-effective, even economically.
Farmers are not using costly inputs like hybrid seeds, chemical fertilizers, pesticides and other agri inputs.
Farmers are advised to use locally available agri inputs like farm yard manure (FYM), compost, bio fertilizers, vermi compost, bio products for plant protection etc.
Farmers get good price for their organic products because of healthy and nutritious in nature.
Therefore organic farming is profitable to many farmers who are practicing organic agriculture. Each year the fertility of soil, Nutritional value and biodiversity increases and you have to count that also. Hope that clarifies your doubt.