Inventory Valuation in Odoo 18: Manually Setting Product Cost with Average Cost & Anglo-Saxon Accounting

Hello everyone,

I'm using Odoo 18 and I have a question regarding inventory valuation and accounting settings.

Here is my current setup:

• Costing Method: Average Cost
• Accounting Policy: Anglo-Saxon

When I import or create new products, I manually set a cost for each product. My question is:

Is it correct to manually enter the cost at the time of product creation, or should the average cost only be calculated based on purchase invoices?

In other words, does Odoo consider the manually entered cost for inventory valuation, or should I leave the cost field empty and let the system calculate it automatically from vendor bills?

I would appreciate any clarification on the proper way to handle average costing with Anglo-Saxon accounting in Odoo 18.

Thanks in advance!