Northlight

Show automatic discounts on product pages without editing your prices

Guide by Northlight Apps · Updated 1 November 2026

Short answer: many ways of showing a sale price work by changing your product or compare-at prices. That can cause double discounts at checkout, or prices left wrong after the sale ends or an app is removed. A safer approach reads the real checkout price from Shopify and shows it, without touching your products.

Two approaches

Editing prices (compare-at or scheduled price changes)

Reading the real checkout price

Questions to ask before you pick a tool

Honest limits

Discount codes can't be shown in advance, because they depend on the code a shopper types. Only automatic discounts can be shown this way. Our app, Pricelight, takes the "read the real price" approach; it's new and so far tested mainly on Shopify's Dawn theme.

Pricelight is ours and is waiting for Shopify App Store approval. Not sure if your store is affected? Try the free discount checker.