[SOLVED] Final price only ajax updates only after added in cart

Ok, forget it, i have out it. It was a conflict with another plugin...

Hi,
I have a complex calculation at https://www.financialleasecalculator[dot]com/product/leaseberekening/

My problem is that when i change input, at first it doesn't update final price.
Only after i added it to the cart, i can change what i want and price is updated…

What am i missing or doing wrong?

Regards
Alex