When setting up the inventory module there is a parameter that you might want to review with the accounting team. It’s called last price history. The way this works is in conjunction with the last price parameter on the item setup. If these are selected then each time you invoice update a purchase order then you will see a history of the prices. This is useful for analysis and costing

Here is a quick overview.

AX2012 R3 CU9.

Cheers

Lachlan