Subscription fee ranges from Rs 7,000 to Rs 30,100 +GST Based on the plan

Startup & Premium plans comes with 1 year , Enterprise & Enterprise plus comes with 2 Years validity.

Yes, eR4u has lifetime plan for more info see: feature&pricing.php

Yes, Every plan has diffrent Renewal & AMC charges for more info see: feature&pricing.php

You need to renew your Subscription to enjoy the continued services as per the renewal & AMC based on the plan

You can upgrade to any plan at any time by paying the difference amount on pro Rata basis. You cannot downgrade the plan.

No