Sites similar to Associated Content?

Does anyone know of any sites that pay upfront like Associated Content does? I have the idea that if I spin one article a day into 50 different versions and I sell a different version to each site that I should be able to rake in some money.

Any help's appreciated, thanks.

I don't know if they pay upfront, but bukisa.com

Bukisa doesnt pay upfront. They pay on the amount of traffic you send them.