Most web design agencies charge between $5K and $20K for a professional landing page. The difference between a $2K page and a $15K page is rarely the design. Both might look clean and modern. Both might have good copy. The difference is what happens after a visitor arrives. A $2K page has a contact form that sends an email. The email gets buried. The lead goes cold. The agency never knows whether that visitor came from Google, a referral, or a paid ad. A $15K page has a lead capture system. Every enquiry is tracked. Every lead has a status. Every follow-up has a reminder. The agency knows exactly which marketing channels are bringing clients that actually pay. This tutorial builds the second type. You will build a professional agency landing page in Next.js with a lead capture form powered by Formgrid. Every enquiry becomes a tracked lead with Google Sheets sync built in. No Zapier needed. No separate CRM required.…