"update item pricing" feature needed

It would be nice to have a check-box near each line item on a PO and the column would be titled "update pricing".  The default would be set to "no".

It would work like this.

If we are processing a PO and we see an item that has an incorrect price, we would change it on the PO and click the check box to update.  Then, when we save the PO, NS goes over to the item and updates the "vendor cost" to match the price used on that PO.

Also, on a different topic (but also related to POs), we can't use the NS version of vendor quantity pricing as our vendors don't use consistent % drops (like "at 25 units, then -20%") and as a result of their random price drops .... we would need to create a separate equation for every single item and that would be unmanageable.  We would still like the ability to make the vendor quantity pricing behave just like the current method of managing retail quantity price breaks.