Marge Guard
Marge Guard is a read-only Shopify app: it never changes the store. Avoid selling at a loss during your sales events. It is in review (submitted on 11 October 2026) and coming soon on the Shopify App Store.
Features
- Lists every active discount, including discounts created by other apps, with alerts.
- Shows which discounts stack.
- For each variant, calculates the worst final price and compares it with the unit cost.
- Flags products sold at a loss, products with no cost entered, and out-of-stock products still on sale (overselling).
- After a promotion: orders from the last 60 days that sold below cost.
- Pro plan: CSV export and cost import.
There is no video.
Languages
Interface in English and French. Support in French and English. All countries.
Price
Planned prices, billed by Shopify: a free plan; Pro at 19 USD a month or 190 USD a year. 14-day trial on Pro.
Support: https://marge-guard.fly.dev/support . Privacy: https://marge-guard.fly.dev/privacy . Contact: contact@aoex.be.
Questions
Does Marge Guard change the store?
No. It is a read-only Shopify app: it never changes the store.
Which discounts does it show?
It lists every active discount, including discounts created by other apps, with alerts, and it shows which discounts stack.
How does it flag a sale below cost?
For each variant, it calculates the worst final price and compares it with the unit cost. It flags products sold at a loss, products with no cost entered, and out-of-stock products still on sale (overselling).
What is in the report after a promotion?
The report lists orders from the last 60 days that sold below cost. The Pro plan adds CSV export and cost import.
What are the planned prices?
Planned prices, billed by Shopify: a free plan, and Pro at 19 USD a month or 190 USD a year, with a 14-day trial on Pro.
Who is it for, and what is its status?
The interface is in English and French, support is in French and English, for all countries. The app is in review, submitted on 11 October 2026, and coming soon on the Shopify App Store. There is no video.
