A good landing page's(if you have a high-ticket offer) main element is a VSL. The video sales letter is the main element because it shows the pain that the viewer is having or the pleasure they want to achieve. A good VSL is around 10-15 minutes and from the 2 VSLs I've done, my conversion rate was 8,7%. Example. 1000 people see your page, your offer/product/course is $1000, 87/1000 people buy it which makes you $87,000.