Omnibus by iLabs

Omnibus by iLabs adapts your WooCommerce shop to the requirements of the Omnibus Directive
(on informing about the prices of goods and services) — it automatically tracks the price
history of every product and shows customers the lowest pre-discount price, exactly as
required by law. The plugin works in the background, with no need to enter prices manually
for every promotion.

Automatic price history tracking

Every time a product’s price changes — whether manually in the admin panel, through a
scheduled WooCommerce sale, or programmatically (e.g. via an integration, import, or the REST
API) — the plugin records that moment in the product’s price history. Nothing needs to be run
manually.

Correct discount start anchor

By law, the 30-day window used to determine the lowest price is counted from the moment the
discount starts, and does not shift as the promotion continues. The plugin tracks this
reference point automatically — both for promotions started manually and for those scheduled
in advance in WooCommerce.

Three product regimes

The plugin recognizes three legal situations and applies the correct rule to each:

• Standard — a product that has been on sale for at least 30 days: the classic 30-day window.
• New product — a product first offered for sale less than 30 days ago: the window is
  counted from the day it was first offered for sale, not from 30 days back.
• Perishable product — flagged manually in the product editor (General tab): instead of
  the lowest price from the last 30 days, the price shown is the one before the first discount.

Manual and scheduled promotions

Both promotions entered manually in the product editor and promotions scheduled in advance
(sale start/end date in WooCommerce) are supported — in both cases the plugin correctly
determines the discount’s starting point.

Notes on the product page and product listings

Information about the lowest price appears automatically on the product page, optionally on
the shop’s product listings (enabled in settings), on product variations, and in the grouped
products table. The note’s content can be customized programmatically via the
ilabs_omnibus_price_note filter, and a shortcode,
[omnibus_by_ilabs_message_single_product], is also available for placing the note manually
anywhere (e.g. in a theme template).

Note: the note does not appear in upsell/cross-sell (related/recommended products)
widgets — only on the main product page and the shop listing.

WooCommerce → Omnibus screen

A new admin screen (WooCommerce → Omnibus) shows the shop’s data status: the number of
processed/needs-attention products, lets you start the data migration, and lists products
that need manual review after migration.

Data migration from an earlier plugin version

Shops using an earlier version of Omnibus by iLabs (1.x) have their data automatically
detected as requiring a format update. The migration is started with a single click on the
WooCommerce → Omnibus screen — the process runs in the background, in batches, and can be
safely paused and resumed.

Migration from the Omnibus plugin (Marcin Pietrzak)

Shops that previously used the “Omnibus — show the lowest price” plugin by Marcin Pietrzak
can import their entire price history into Omnibus by iLabs with a single click — without
losing existing history and without any gap in the correct determination of the reference
price.

Migration requirements:

• The source plugin (Omnibus — show the lowest price) must be deactivated before starting
  the import — if it is active, the import is blocked (both plugins would write data at the
  same time, which could corrupt it).
• The source plugin can be safely removed after migration — even before it, if its files
  have already been removed, the data remaining in the database is still detected and
  imported. However, we recommend running the migration BEFORE removing the source plugin’s
  files.
• The import covers all products with price history, not just those currently on sale.
• The import never overwrites or removes existing Omnibus by iLabs history — it only adds
  new, non-duplicate entries.
• The process is safe to run again — it does not create duplicates on a repeated import.

Known migration limitations (sometimes requiring manual review):

• The older version of the source plugin (schema “v3”) recorded only promotional events
  in its history — regular price changes without a sale may not have been recorded at the
  source. If the import cannot find a reliable reference point for a product currently on
  sale, that product is placed on the “needs manual review” list on the WooCommerce → Omnibus
  screen, where you can manually specify the correct discount start date.
• If the source plugin already ran its own internal data-format migration, part of the
  history of free promotions (price 0) may have been irretrievably lost on the source side
  before the import ever sees it — this case cannot be automatically reconstructed.

Requirements

• WordPress 6.2 or newer
• WooCommerce 5.1 or newer
• PHP 7.4 or newer

1. Upload the plugin directory to /wp-content/plugins/ or install it through the WordPress admin.
2. Activate the plugin in the “Plugins” menu.
3. Check the settings under WooCommerce → Settings → General (Omnibus by iLabs section).
4. If you are updating from version 1.x or migrating from the Omnibus plugin (Marcin
   Pietrzak), go to WooCommerce → Omnibus and follow the on-screen instructions.

Do I need to enter sale prices manually?

No. The plugin automatically records price history on every product price change — manual,
scheduled, or programmatic.

I’m updating from version 1.x — what happens to my data?

After activating the new version, the plugin will detect that the data needs a format update
and show a corresponding notice in the admin panel. The migration is started manually, with a
single click, on the WooCommerce → Omnibus screen. The process runs in the background and can
be safely paused and resumed — nothing will be lost or duplicated.

I previously used a different Omnibus plugin — will I lose my price history?

No, as long as the source plugin is “Omnibus — show the lowest price” (Marcin Pietrzak) — see
the “Migration from the Omnibus plugin” section above. The price history from that plugin can
be imported with a single click, without losing data already recorded by Omnibus by iLabs.

Will the note appear on discount coupons?

Not in this version. Omnibus by iLabs tracks changes to a product’s regular/sale price in
WooCommerce — discount codes (coupons) are not currently supported.

Do you support product variations and grouped products?

Yes — simple products, variations (each independently), and grouped products. A variable
product acting as a “parent” (with no price of its own) is not treated as a sellable product —
the note always applies to a specific variation.

2.0.2

• Fix: compliance/migration warnings could get stuck — the note wrongly stayed hidden, or a
  stale warning persisted, after the underlying issue was already corrected.
• Fix: the product edit screen no longer shows the regular price as a fake Omnibus reference
  price, and the “sale without a real reduction” notice now describes the correct condition.
• Change: compliance notices have clearer, status-specific titles and guidance; “price not
  below reference” is now flagged for review instead of shown as purely informational.
• Change: a single “Products requiring review” section, at the top of the page, with a direct
  per-product link from the compliance notice — no more duplicate/unlinked review lists.
• Change: both migration screens show a step-by-step guide and hide “start” actions when there
  is nothing to do.
• Change: clearer price label for products offered less than 30 days.

2.0.1

• Fix: products that predate the 2.0 data format could be misclassified as a “new product”
  (window from first offering) instead of the standard 30-day window, after their first
  price change post-upgrade.
• Fix: the omnibus reference price could stay frozen at a stale value when a product’s price
  changed more than once within the same request (e.g. batch/API scripts, cron jobs).

2.0.0

• Automatic price history tracking extended with full support for three legal regimes:
  standard, new product, and perishable product.
• New WooCommerce → Omnibus screen for managing the data migration and reviewing products
  that need manual review.
• Data migration from an earlier plugin version (1.x) to the new format — started with a
  single click, running in the background, safe to pause and resume.
• New: import price history from the “Omnibus — show the lowest price” plugin (Marcin
  Pietrzak) — with a single click, without losing existing history, with automatic detection
  of products needing manual review of the reference point.
• Improved handling of variable products: the variable parent is never treated as a sellable
  product.
• Required: PHP 7.4 or newer.

1.0.12

• Omnibus notes on listings

1.0.11

• Don’t show Omnibus annotation if price hasn’t changed for at least 30 days
• Plugin framework update to v1.0.23

1.0.10

• Added a span element for more convenient styling

1.0.9

• fix pl lang support
• core files small refactor

1.0.8

• First release on wp.org