How do i setup a fixed price and an additional price after the fixed price on pages in the conditional logic section.

For example i have a page costing 1.20 and an additional page costing 30 cents but when it goes to tally up the cost it never adds the first additional page. It ends up doubling and counting the fixed price for first page and additional cost for first page then second page.

I assume this is the form you're working on, http://www.jotform.com/61582223828458.

After cloning your form, I was able to inspect the conditions in it and see what you mean.

Above, instead of having only $1.50 for 2 pages, that's $1.20 for the first page and another $0.30 for the additional second page, it sums up to $1.80.

So you can have the $0.30 added only if it is for additional pages you can update your condition to this:

I hope this helps. If in any case I have misunderstood your concern, please feel free to contact us anytime to provide us more details and scenarios. 

Thank you