Reading cost components of an item in VA01...

Hi,

We have some complex requirement to calculate an item price based on some components of cost calculation and markup. That varies based on some criteria. We have to use a pricing formula exit to provide such indirect functionality.

Cost is provided in a condition say EK01. In va01, after costing an item cost in being saved in buffer. It is not going to be saved in tables KEKO & KEPH unless you save the order. My question is:

- How to read cost from buffer? or

- is there any function module that i can provide the item detail and it returns back cost components?

Any help is appreciated...

Thanks in advance,