Missing Data:Cost

I have a urgent qustion for you. please reply as soon as possible.

An order was created with 50 item numbers

some of them are allocated, but some items are still open...

now when I went to VA02 and ran availabilty check for those open items...

Now when I save the sales order its giving following error saying that incopletion log.

When I click complete data, it took me to pricing stuff and I found VPRS has 0.00.

Please tell me the solution. I appreciate ur help

BTW: the order was created thru batch.

Following data still needs to be completed

Item Missing data

10 Cost

30 Cost

Thanks

Radha