Amazon is preparing another structural change that will quietly affect many sellers in 2026, and its impact has already begun to take shape. From January 31, 2026, Amazon will require third-party developers to pay an annual subscription fee of $1,400 to access the Selling Partner API (SP-API). From April 30, 2026, additional usage-based charges will apply, starting at $0.40 per thousand API calls. These fees apply to developers rather than sellers directly, but in practice, the distinction is limited. Tools used for repricing, inventory syncing, order workflows, reporting, and listing optimization all rely on SP-API to function. Once API usage becomes a billable expense, every data request carries a real cost. Software providers will need to absorb or recover those costs through subscription changes, usage limits, or revised pricing structures. The impact will not be the same for every seller. Businesses using a single, low-activity tool may see little change. Sellers operating multiple integrated systems, however, face cumulative exposure as each tool provider adjusts pricing to reflect API costs. This article explains which Amazon tool categories are most likely to become more expensive in 2026 and why those changes matter for business planning. Who Is Most at Risk From SP-API Pricing Changes? Amazon will continue offering a Free Tier under the 2026 SP-API pricing update, so not every seller will be affected. Sellers with limited automation and lower data usage may see little or no immediate impact. Pricing pressure increases as tool usage and data activity grow. Higher risk setups include: Large catalogs with many variations High order volumes Frequent repricing or near real-time syncing Multiple tools pulling the same Amazon data Enterprise sellers and agencies managing multiple accounts These setups generate higher data usage, making the Amazon SP-API fees impact on tools more likely through pricing changes or usage limits. Read More: How to Check Whether New SP-API Fees Will Affect Your Amazon Tools Tool Category 1: Repricing Tools Repricing tools are one of the most exposed categories under the Amazon SP-API pricing changes in 2026. They rely on frequent data requests to track competitor pricing, Buy Box status, and listing changes. Many Amazon repricing tools check prices continuously, even when no update is required. Under the new SP-API pricing model, this constant activity increases API usage and pushes costs higher for software providers. Why Repricing Tools Are High Risk Frequent competitor price checks Near real-time price updates Large catalogs with many SKUs AI-based repricing tools running continuously As SP-API usage becomes billable, repricing software providers may adjust pricing, introduce usage limits, or move advanced features into higher plans. For sellers using aggressive repricing strategies, even small changes can add up. Tool Category 2: Inventory Sync and Multi-Channel Connectors Inventory sync and multi-channel connector tools move data constantly between Amazon and other platforms such as Shopify, marketplaces, or warehouse systems. Their role is to keep stock levels, prices, and listings aligned across channels. These tools often run frequent updates to avoid overselling or stock mismatches. Under the Amazon SP-API pricing changes in 2026, this high-frequency syncing increases data usage and raises operating costs for software providers. Why Inventory and Connector Tools Are High Risk Continuous stock and price updates Multiple channels pulling the same Amazon data Large catalogs synced across platforms Real-time or near real-time syncing requirements As SP-API usage becomes a paid resource, inventory and connector tools may introduce higher pricing tiers, reduce sync frequency on lower plans, or charge based on usage. Sellers running Amazon alongside multiple channels are more likely to feel these changes. Tool Category 3: Order Management and Workflow Tools Order management and workflow tools handle the movement of order data between Amazon, fulfillment partners, warehouses, and internal systems. These platforms rely on frequent data pulls to track order status, shipping updates, cancellations, and returns. Under the Amazon SP-API update in 2026, every order-related data request contributes to overall API usage. Tools that monitor orders throughout the day or trigger automated workflows can generate a steady volume of calls. Why Order Management Tools Are High Risk Continuous order status checks Automated workflow triggers based on order updates High order volumes increase call frequency Multiple systems accessing the same order data As SP-API usage becomes billable, Amazon order management tools may adjust pricing, limit automation features, or introduce usage-based plans. Sellers with high daily order flow or complex fulfillment setups are more likely to see changes. Tool Category 4: Analytics and Reporting Dashboards Analytics and reporting dashboards pull sales, inventory, and performance data from Amazon to generate insights. Many of these tools refresh data frequently to provide near real-time visibility into revenue, profit, and stock levels. With the Amazon SP-API pricing changes taking effect in 2026, frequent report refreshes increase API usage. Dashboards that update automatically or pull multiple reports throughout the day contribute significantly to overall data consumption. Why Analytics Tools Are High Risk Regular report refreshes Live or near real-time dashboards Multiple reports pulled across accounts Historical data queries at scale As SP-API usage becomes a measurable cost, analytics tools may reduce refresh frequency on lower plans or introduce pricing based on data volume. Sellers relying on live dashboards may notice the impact first. Read More: How to Check Your Amazon SP-API Call Usage Tool Category 5: Listing and Optimization Tools Listing and optimization tools monitor product listings to track pricing signals, keyword performance, Buy Box status, and listing changes. These tools often scan large catalogs to identify opportunities or issues that require action. Under the Amazon SP-API pricing changes in 2026, this ongoing monitoring increases data usage. Tools that repeatedly check listing attributes, rankings, or performance metrics across many SKUs generate steady API activity. Why Listing and Optimization Tools Are High Risk Continuous monitoring across large catalogs Frequent checks for pricing and performance changes Multiple metrics pulled for each listing Automation that runs on scheduled intervals As SP-API usage becomes billable, listing and optimization tools may adjust pricing, limit scan frequency, or reserve advanced features for higher plans. Sellers managing large catalogs or relying heavily on optimization tools are more likely to feel the impact. How eSellerHub Helps Sellers Prepare for Rising Tool Costs eSellerHub helps sellers reduce rising software costs by simplifying how their systems connect to Amazon. Instead of relying on multiple disconnected tools, We build custom backend workflows that centralise data handling and reduce redundant SP-API usage. By streamlining integrations and focusing on efficient data flow, sellers gain more predictable performance and scalable operations as volumes grow, without unnecessary API activity driving higher costs. Conclusion The upcoming changes to Amazon SP-API pricing reflect a structural shift in how third-party tools operate, not a short-term adjustment. As software providers adapt to usage-based costs, tool pricing and feature access will continue to evolve. Sellers who understand these changes early are better positioned to avoid unexpected cost increases. Reviewing how tools connect to Amazon and identifying where usage can be reduced helps maintain control as 2026 approaches. Taking a proactive approach now allows businesses to manage software costs more effectively and plan with greater confidence in the years ahead. Enter your Details to Receive the Checklist ×