Commerce Platforms & DTC
Shopify

The Shopify zero-price bug that breaks Merchant Center feeds

TL;DR Merchant Center's "Invalid value for category [price]" fires whenever the price attribute Google receives is exactly 0; the only documented exception is mobile devices sold under a contract. . .
dev.to
August 24, 2026
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The Shopify zero-price bug that breaks Merchant Center feeds
WHAT HAPPENED
s Shopify product silently drops out of Google Shopping, or picks up a t a valid commercial offer, so Google rejects the item outright. Why does this bug hide from spot-checks? It re looking at? Run the product URL through the Rich Results Test and read thepricefield on the detected Product. That s worth doing properly rather than patching one product On Shopify the zero comes from one of two unrelated causes: an unfilled variant price (a data issue, no code involved) or a theme's JSON-LD snippet reading a variable that can resolve to empty (a code bug that hits every product page).
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