Don't make this Amazon holiday mistake

Saving the hot deals for Amazon sale days while your own store runs a quiet discount is how Competitive External Price finds you.
Are you saving the hot deals for Amazon sale days like Black Friday? If you're "meanwhile" discounting on your own store, you're probably making a mistake.
Two calendars, one ASIN
Most serious brands protect the deep cut for Amazon's event calendar - Prime Day, Prime Big Deal Days, Black Friday, Cyber Monday. That instinct is smart.
The mistake is quieter. Off to the side, your own website - Shopify, for example - runs a flash sale or a standing promo while Amazon stays at full price. Same product. Two faces of the price. You tell yourself the site sale is "meanwhile," temporary, separate.
Amazon does not treat it as separate.
Competitive External Price and Pricing Health
In Seller Central, Pricing Health is where Amazon surfaces offers that are ineligible to become the Featured Offer. One documented reason is Competitive External Price (CEP): the lowest price Amazon recently found for the item - or for items customers might treat as equivalent - at a reputable retailer outside Amazon. Retailer names are not disclosed.
If your landed Amazon price (item price plus shipping) sits above that CEP, Amazon can refuse to select your offer as Featured Offer at the current price. That is not the same as losing the Buy Box to another seller who undercut you on the listing. It means Amazon will not put your offer in Featured Offer position while the external comparison is hotter - so the main detail page can lose a clean Add to Cart / Buy Now path for the duration of the mismatch.
Your DTC site, Shopify, brand site, or big-box retail can all feed that comparison. Your own promo calendar is on the board.
What this is not
This is not a claim about a mysterious mid-August algorithm event. Treat that as rumor until Amazon documents it. The tools and terms that matter here are Pricing Health and Competitive External Price. Confirm the CEP Amazon is referencing in Seller Central before you invent a story.
Before the holiday runway
Saving the hot deals for Amazon sale days only works if the rest of the year does not silently undercut the Featured Offer you need when those days arrive.
Before you "meanwhile" promo off Amazon:
- Open Pricing > Pricing Health.
- See whether CEP is already in play on the ASIN.
- Align the calendars - raise the site price, match Amazon down, or accept that Featured Offer may blink out for the sale window.
If you want this done clean across your site and Amazon - Talk to us.