I’ve seen a lot of people get caught by those 'all-in' deals that aren't actually all-in. Usually, that ₹6,999 is just for the service, and the government fees get tacked on later. My advice? Get a full breakdown of costs upfront and verify the agency on the MCA portal.
Keep in mind that GST registration is free online, so only pay if you prefer assistance with the paperwork. It’s much cheaper to pay for good help now than to pay a penalty later for a messy filing.