Inventory Cost Receipt

Does anyone know of a way to receive costs to an inventory item?

Example: 100 lbs of steel is received at $10.00 /lb

Now a freight invoice for $50.00 shows up.

How to receive the $50.00 cost to the items in inventory without increasing
the qty?
Should just change the cost each from $10.00 to $10.50.

Thanks

Bob Bruton
Entek Corporation