Landing Pages Design is a key in order to create a successful marketing campaign.

A Good Landing Page Matters..

The Landing Pages creation in an advertising campaign, may generate a leads increase of 400% or more since the user would enter into a website totally customized according to the ad he saw before.
The landing page creation and design will fall into more costs in a short term, but the result will fastly pay off this increase in costs.
Most of the companies that tried banner or search engine campaigns associated with landing pages, manifest that the Money actually yields better doing landing pages rather than not doing it so. They say that saving that Money is not worth it because the performance increase they get from sales doing landing pages, is way much higher than launching a campaign without LPs.