I have a product whose list price and default price are both set to 5. These
are the only explicit prices set for this product. There is also no cost
component set for this product. This product has only one inventory item
whose cost is 3. I set up a price rule for this product to add 30% of
average cost to the list price. When I try to add one of this product in the
cart, the price is shown 6.5, instead of 5.9. The reason is that the price
rule use the list price as the average cost. Is there any way (out of box)
the price rule will use inventory cost?