How Much Does It Cost To Make An App?
A brilliant One Pager with a beautiful flat design that helps you calculate how much it will cost to ship your app idea. A great reference for a useful informational One Pager that pitches a service right at the end.
This website has unfortunately been redesigned or gone offline, so I have removed the direct link to it. The screenshot below hopefully preserved enough of the design but if you are really keen to inspect further, try this Archive.org link. FYI: the site was first featured on 12 September 2013.