Contact your nearest CA. Only he can help. Even the CA are confused. But note CA will charge you anywhere between rs4500 to 8000 just to get gstin. GST have destroyed livelyhood of many like you. Question is after the product cost selling fees and CA fees ,can you still make profit?
I have send a dozen questions ( GST related )on email id provided on https://www.gst.gov.in/ but havn't got a single reply yet. This means you have to pay CA fees.
Contact legalsuvidha.com team they are doing registration in INR 1000 across India