1. When we enter the purchase items, we can enter the exact price in the "Price without tax" window and it will be updated and displayed only for that specific purchase.
2. We can update the purchase item price within the product as follows. In the Catalog section, select the Products subsection and select the product for which we want to update the price. Within the product itself, select the Suppliers tab and click on the "Update" button. Enter the correct price and save. The price changed in this way will remain permanently updated and as such the system will withdraw it during the next purchase. If we purchase a product from several suppliers, we can update the price for each one separately.