Because four hundred ends in two zeros, I felt compelled to share something really useful. I'm probably most useful with Wordpress stuff, so I've knocked out a quick sales page template you can add to any theme you're using.
I've kept everything inside this one page, so it's really easy to edit and change the colors. It's very simple, but if you want a minimalist sales page this will do the trick for you.
I attached the file to this post in a zip. To use it, just extract the php file inside and put it into the folder of the theme you are using. This will add "Simple Sales Page" as an option to your dropdown list of page templates. Any page you apply this to will look completely different to the rest of your Wordpress site.
Here's the raw code, if you don't feel like downloading, and so I can explain a bit:
Up in the head there is all the css code that controls this page.
To change the background color, change the hex code next to "background" under "html, body" - the first one there that currently has "#6d81a4"
If you want a different font, you can change "font-family" in that same area too.
To change the border color around your copy, change the hex code at "border:2px solid #03245d;", under the "page" area.
Here's some color charts with hex codes to choose from: Color Charts - Webmonkey
Everything else can be changed up pretty easily too, but that should be enough to get started.
Also, "Exclude Pages" is a really handy plugin that lets you hide pages from your navbar. This is really useful if you want to setup a sales page or landing page with a template like this, but don't want it showing up on your menu. You can get it here: WordPress › Exclude Pages WordPress Plugins
I hope that helps get some new sales pages up and running for people, and you enjoy my little pressie!