Product options visible in category page

Dear all, in my webshop I am selling most items in different packages of 1, 5, 20 liters, these are options which users have to select in the product page.

Now I would like to have a functione which allows me to view these options in the product list on the category page. A good example I found here: bit.ly/fjLL8c (sorry its in dutch, couldn't find a better example)
On the 5th product from top, you can see the price per amount (a piece, per 5, per 10). I have the same idea only with the package option, so users don't necessarily need to click the product to see the prices for a larger package.

Please PM me any offers regarding this.

Thanks.

--edit--
Maybe an extra div in the template and a field in the database so I can fill it manually will do just fine. Then it doesn't have to be linked to an option.

So after some thinking, I came to the following:

It would be better to implement a div/table on that spot, and not link it to an option but I want to manually input the column headers and the content in the admin area (when adding/editting a product). The lay-out of the template will have to be the same as the example site I posted before, so this additional table left, description preview center and image to the right.