How do I make a form that returns information for user

[sydneysunshine]

Hi there!
I've made a form (feedbackform module 0.9.12 on CMS 0.13) for a conference registration.
What I want is for the registration cost to be returned based on user input. I don't want a pulldown list as there are 12 cost options.
So the process would be they would check if they are coming on day one or day two, then they would check what size org they are and then check whether they are a member or not.
Is there any way for the cost to appear based on what they've checked? It doesn't matter if it's on a separate page.

[tsw]

You might be able to use the "thankyou page" from fbf to include a user defined tag which uses the same post values and calculates the costs (havent tested tho)

or you could check formbuilder I think its ment for this kind of stuff

Hope this helps