> For the complete documentation index, see [llms.txt](https://native-app-co.gitbook.io/omnibus-owl/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://native-app-co.gitbook.io/omnibus-owl/tools/auto-compare-at-price.md).

# Auto Compare At Price

Automatically set and clear the strikethrough "compare at" price when your prices change — with a built-in anti-fake-sale guardrail.

**Auto Compare At Price** manages Shopify's strikethrough "was" price for you. When a variant's price drops, the app can automatically set the compare-at price to the previous higher price, producing a visible strikethrough on your storefront — with zero manual work.

Open **Tools** in the app menu and turn it on from its card, or click **Configure** to adjust the options below. It's off by default.

## How it works

* **On a price drop:** Omnibus Owl sets the variant's **compare-at price** to the previous (higher) price, so shoppers see the old price struck through next to the new one.
* **On a price increase (optional cleanup):** if the new price is now equal to or above the existing compare-at price, the app **clears** the stale compare-at price so you never show a nonsensical "discount." This is controlled by the **Auto-clear compare at price on price increase** toggle.

## The anti-fake-sale guardrail

The setting **Minimum days at higher price** protects you from accidentally faking a reference price:

* Set it to, say, **7**, and the app will only set a compare-at price if the higher price was genuinely in effect for at least 7 days.
* If the product only briefly held the higher price, the app **skips** setting compare-at — so you don't advertise a "was" price the product never really had.
* Set it to **0** to disable the guardrail (compare-at is set on every price drop). The app shows an in-app notice when the guardrail is off.

{% hint style="warning" %}
The compare-at (strikethrough) price is **not** the same as the EU Omnibus prior-lowest-price. Auto Compare At Price is a merchandising convenience; the compliant lowest-price line is handled by the [lowest price widget](/omnibus-owl/core-features/lowest-price-widget.md). Used together with the guardrail, they keep your sales both attractive and honest.
{% endhint %}

## Example

1. A jacket sells at **€120** for three weeks.
2. You drop the price to **€89**.
3. With Auto Compare At Price on and the guardrail at 7 days, the app sets compare-at to **€120** → shoppers see ~~€120~~ **€89**.
4. Later you raise the price back to **€120**. With cleanup on, the app clears the compare-at price automatically.