When you pick an item to an Inventory Registration, then the “Price” field is pre-populated with a default value:

1. If configuration parameter inventory_registration_use_fifo_cost_as_default = 1 has been set, Erply takes the weighted average cost of the batches currently in stock.
2. If step 1 did not give any results, Erply uses the value from the "Product cost" field on product card.
3. If step 2 did not give any results, Erply takes the most recent purchase price from confirmed purchase invoices (in this specific warehouse).