FAQ – the most common questions about Omnibus in PrestaShop
What is the Omnibus Directive and what does it concern in an online store?
Omnibus requires transparency for price reductions – the customer must see information about the lowest price from the relevant period before the promotion, and the seller should have a consistent way of calculating and presenting this value.
How does the module calculate the “lowest price from the last 30 days”?
The module is based on the recorded history of price changes and selects the lowest value from the chosen period (30 days by default). This means the result comes from real data, not from manual entry.
Can I change the 30-day period to another one?
Yes – you can set a different period if you need to adapt the presentation method to your pricing process or the specifics of your offer.
Does the module work with combinations (product variants)?
Yes – variant scenarios are crucial because prices can differ between combinations. The module is designed so that the presentation remains consistent when switching variants as well.
Does the module distinguish between the regular price and the promotional price?
Yes – on the chart (if enabled), you can show the regular price and the final/promotional price separately, which is clearer and eliminates the “mixing” of values.
Daily or event-based price history recording – which should I choose?
The daily mode is simpler and lighter, while the event-based mode better reflects situations where the price changes several times in one day. The choice depends on how often you update prices.
Will the module show several price changes on the same day?
Yes – in event-based mode, the module can record and present several changes in a short time, which is important for dynamic promotions and corrections.
Can the price history chart be enabled/disabled?
Yes – the chart is optional. You can keep only the text with the lowest price or additionally show the chart if you want to build trust and transparency more strongly.
Does the module work on product lists (category, search results)?
Yes – you can enable a simplified view on listings so the information is visible but does not take up space in the product box.
Does the module affect page speed?
The module is designed to present data in a lightweight and clear way. The chart is responsive and launched when it makes sense (e.g. in a modal), rather than being forced into every location.
Does it work with PrestaShop 9?
Yes – compatibility with the PrestaShop 1.7 → 9.x range is one of the key assumptions, so the module is not just a temporary solution.
Is the module suitable for stores with frequent price changes?
Yes – that is exactly when the advantage of automatic history recording and event-based mode becomes most visible, because manually keeping Omnibus compliant with a dynamic pricing policy quickly becomes risky.
What does installation and getting started with the module look like?
You install the module like any other in PrestaShop, and then set the views (page/listing), the Omnibus period, and the recording mode. The rest happens automatically in the background.
Can I adapt the appearance of the text and presentation to the theme?
Yes – the presentation is designed so that it can be adapted to the theme (e.g. a simplified view on listings and a full one on the product page), without overloading the interface.
What is the biggest difference compared to “simple” Omnibus modules?
Most often, the difference becomes clear in difficult cases: frequent changes, several discounts in one day, distinguishing regular/final prices, and a consistent history that does not “fall apart” during promotions.
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