Record the change
Every variant price and compare-at change is stored. Unchanged saves are ignored.
Every sale has a history.
Prior30 records every variant price change, computes the legally correct 30-day lowest selling price, and shows it on product pages in the shopper’s language.
Shopify App Store listing is in review. Email us to install or follow along.
Shoppers should see the prior low—not a guess.
Compute the reference
Prior30 calculates the lowest selling price in the 30 days before a reduction started, then writes it to storefront metafields.
Show it on the product page
A theme app block (and optional embed) places the label under the price, in the shopper’s language. Non-reduced, gift-card, and perishable products stay quiet.
Built for the everyday work
The prior low. On the product page.
Merchants get a compliance dashboard, flagged compare-at prices, and CSV evidence—without Markets, cart widgets, or shopper charts.
Product-page labels
Shows the 30-day lowest selling price on product pages, in English, German, French, Hungarian, Spanish, and other theme locales.
Flagged compare-at
Marks compare-at prices that exceed the legal reference, with a one-line fix suggestion.
Compliance dashboard
Tracked variants, active reductions, and flagged rows in Shopify admin.
CSV evidence (Pro)
Exports CSV of each product’s price history. Free tracks up to 50 variants with no export.
Plans
Free and Pro
Start on Free for a small catalogue. Pro unlocks unlimited variants and CSV evidence. Billing runs through Shopify App Pricing.
Free
$0
For small catalogues.
- Track up to 50 variants
- Labels in EN, DE, FR, HU, ES and more
- No CSV export
Pro
$4.99 / month
For stores that need the full history. 7-day trial.
- Unlimited tracked variants
- All storefront label languages
- CSV price-history export
Prior30 is a merchant compliance aid, not legal advice. You remain responsible for how prices are shown in your markets. Paid plans are billed through Shopify.