Instant In-Stock Sorting for Collection Pages

86% Confidence Medium Market Medium Difficulty $2k-8k MRR Updated May 17, 2026

The Opportunity

An app that adds an 'In stock' option to Shopify collection sort dropdowns so shoppers can quickly prioritize available items. This is especially useful for catalog-heavy stores where availability changes often and customers want to avoid out-of-stock products.

"Merchants want a native, customer-facing way to sort products by inventory availability directly in the collection sorting dropdown."

Market Validation

1
Merchants Asking
90/100
Quality Score
1
Unique Merchants

Detailed Analysis

Proposed Solution

Provide a theme app extension or storefront filter enhancement that adds an 'In stock' sort/filter option, dynamically sorting collection results by variant/product availability and optionally pushing out-of-stock items to the bottom.

Target Audience

Shopify merchants with large catalogs, hobby shops, parts suppliers, and stores with frequent stock fluctuations

Competitive Landscape

Some filter/search apps and merchandising apps offer stock-aware sorting, but many merchants may not have this as a simple built-in dropdown option.

Implementation Notes

Build a theme app extension or storefront script-free integration that injects an additional sort option into collection controls, then map the sort to inventory status using product/variant availability and optionally metafields for backorder/preorder logic. Must support different theme structures, preserve existing sort behavior, and avoid slowing collection page rendering.

Evidence from Merchants

Real quotes from Shopify community forums

"In customer view of store, when using sort by filter… can you please add an “In stock” option to the drop down menu."

- KapitiHobbies

Key Pain Points

Need for better sorting options in customer view

medium

Mentioned by 1 merchants

Impact: Potential loss of sales due to customers not finding available products

Market Metrics

$39-59/mo
Suggested Pricing
~500 stores
Addressable Market
2-4 months
Dev Timeline
2-4 months
Time to Market

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