Hello,
I ma sorry, but you self need do that. I may add that in reply to you, but for real check how that will look and work - will need create New module - with Price added to layout - and check how that will look and work.
Because that module use AJax and jQuery - it will be best test together with some real site template. And All that will ask time and may be will need correct.
You may ask from Contact form custom version for you.
Or try add that to self site self.
Thanks,
Andrew