Why this module? When customers ask for an amount in money (e.g. "I want 5 JOD of grapes") instead of a quantity, the cashier can enter the total price directly. The system calculates the quantity automatically — no mental math, correct inventory and invoicing.

Key benefits:

• Sell by total amount (e.g. 10.00) instead of quantity — ideal for weighed products, bakery, deli.
• Per-product control: enable "Price-based in POS" only for the products that need it.
• Unit price stays fixed; only quantity is updated. Inventory and financial movements remain accurate.

Total Price button in POS

Adds a Total Price button to the Point of Sale control buttons. When the selected order line is for a price-based product, the cashier can click Total Price to activate total-price numpad mode. The cashier then types the desired total using the numpad; the system computes and updates the quantity in real time (Qty = Total ÷ Unit Price). Unit price is never changed.

Per-product control

A boolean field Price-based in POS is added to the product form (Point of Sale tab). The Total Price button is only enabled when the selected line belongs to a product with this flag enabled. Zero unit price and missing selection are handled gracefully; the button is disabled when not applicable.

Product form — Point of Sale tab: enable "Price-based in POS" for the product. The Total Price button in POS is then available for this product.

Product with "Price-based in POS" disabled: in POS the Total Price button stays disabled for this product; only products with the field enabled can use it.

Requirements

• Odoo 19 (Community or Enterprise)
• Point of Sale app installed and used in your database

How it works

1. In the product form, open the Point of Sale tab. Enable the Price-based in POS checkbox (below "Is a Weighed Product?").
2. In the POS session, add that product to the order and select its order line.
3. The Total Price button in the control-buttons area becomes clickable.
4. Click Total Price. The button turns active (highlighted) and the numpad switches to Total Price mode.
5. Type the desired total amount using the numpad (e.g. 2). The system computes: Qty = EnteredTotal ÷ UnitPrice and updates the order line quantity in real time.

Step 1: Select the product (with the field enabled). Step 2: Click Total Price — the button becomes active. Step 3: Type the total amount on the numpad. The order line quantity is updated automatically.

Final result: The order shows the calculated quantity (e.g. 0.25 kg) with the total matching the entered amount. The line is ready for payment.

For a product that does not have "Price-based in POS" enabled (e.g. Bagel), the Total Price button stays disabled. You cannot sell it by the customer's requested total price — only by quantity and unit price.

Edge cases

No order line selected, product without the flag, or zero unit price — the button is disabled when not applicable and invalid numpad input is ignored.

POS with no products in the order: the Total Price button is visible but disabled (cannot be clicked) until a price-based product line is selected.