If a product's price varies based on configuration, how can a developer inform the user of the varying pricing?

Changing the display text of the price list entry is the most effective approach for informing users about varying product pricing based on configuration. This method allows the price to be clearly visible and immediately associated with the specific product and its options. By altering the display text, the developer can communicate variations directly, ensuring that users understand how different configurations impact pricing at a glance.

While including a note in product details may provide additional context, it might not capture the user's attention as effectively, especially if the note is not prominently displayed. Displaying a message on the product image can be visually striking, but it may clutter the interface or distract from the main features of the product. Adjusting the buying options also can enhance user experience, but this may not directly convey the price variation itself, focusing more on the purchasing process than the pricing information.

Thus, modifying the display text allows for a straightforward and integrated way to clearly communicate the pricing differences based on product configuration, ensuring users have the necessary information when making their purchasing decisions.