Some Item Price/Cost does not show on stock posting screen

Hi All..

We have a client on SAP9.1 PL07, and when doing a stock posting, some item prices does not show.

I read afew threads which spoke about the manage item by warehouse tickbox being ticked,

for all the items..these are ticked. Not sure what else to look for.

Please see below screenhot.

One of the items shows the price and the other doesnt