Does anyone know of a good Sales Plugin

Hi all,

I have a general query, does anyone know of a good plugin for creating sales pages?

Im looking for somthing good that will create a colourful page that will represent my product packages i am selling.

The best examples I can think of, that relate to what I am trying to explain are below: (There not the best, but i hope it helps explain)

http://www.123-reg.co.uk/make-a-website/#tab-3
http://www.bqeek.com/
http://www.navertech.com/signup/website-packages

Any help would be really really helpful.

Thanks