I live in India and want to order a couple of plants from them, is it necessary to get phytosanitary certificate from them? If yes them what is it's cost?
I am from India as well. I have purchased from CZ plants several times. I have not needed a phytosanitary certificate - I don't think India needs. However, I have had a problem buying live plans from CZ plants - I have done better with BCP overall on live plants (but they have a minimum order requirement, unlike CZ). The plants are smaller than expected and for some reason, so far, not a single one has survived. In contrast, orders from BCP always have more plants than stated AND the plants have overall fared better than the ones from CZ plants for me. At this moment, I don't have a single plant from CZ that is still alive. (I've purchased several times over the last 4 years I've been growing CPs).
Though depending on where you live in India (I'm near SWELTERING Mumbai), a large part of keeping plants alive is probably temperature shock on top of the shipping stress. So generally getting more plants works out better than less plants. At least for here.