Website pricing in India spans two orders of magnitude for what sounds like the same deliverable. The difference is almost never the number of pages.
What the price is actually buying
A template installation, a custom design, and a custom build with integrations are three different products. Confusion about which one you are buying causes most of the disappointment in this industry.
The recurring costs nobody quotes
Domain, hosting, SSL, email, plugin licences, maintenance and content updates are annual realities. A cheap build with expensive licences often costs more over three years than a well-built site with none.
Where it is worth spending more
Speed, mobile experience, tracking setup and content quality change your conversion rate. Animation, sliders and parallax effects almost never do.
Questions to ask any agency
Who owns the domain and hosting? Will I get the source code? What is the post-launch support period? Which of these costs recur annually? Any agency that hesitates on the first two questions is telling you something important.