Setup takes a few minutes. You connect your Amazon, Shopify, or Walmart account and choose the data you want in Google Sheets. After that, data loads and syncs automatically in the background going forward.
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4.8 Rating · 11k+ Downloads · Trusted by Sellers
Last updated -
June 12, 2026
What This Report Covers
✅ The Storage Fees report returns the estimated monthly storage fee per ASIN along with every input Amazon uses to calculate it: dimensions, weight, volume, size tier, and storage rate.
✅ Storage discount eligibility is included so you can see which ASINs qualify for reduced storage fees and whether they are receiving the discount.
✅ Storage utilization ratio and surcharge rate are included where Amazon returns them, giving you visibility into fee calculations that vary by utilization level.
The Amazon FBA Storage Fees report returns the estimated monthly storage fee for each ASIN along with every input Amazon uses in the calculation: product dimensions, weight, volume, size tier, storage rate, and utilization-based surcharges. Use this data to verify that Amazon's fee calculation matches your product specifications and to identify which ASINs are your highest storage cost items.
Supported Fields
What Sellers Use This For
Storage fee verification. longest_side, median_side, shortest_side, weight, and product_size_tier are the inputs Amazon used when calculating your fee. Comparing these against your actual product specifications shows whether Amazon has the right measurements on record. A miscategorized size tier is a direct billing error.
Highest storage cost identification. estimated_monthly_storage_fee per ASIN lets you rank your inventory by storage cost. The ASINs at the top of that list are your first candidates for sell-through acceleration, removal, or repricing.
Discount eligibility audit. eligible_for_inventory_discount and qualifies_for_inventory_discount show whether each ASIN can receive a storage discount and whether it is actually receiving it. An ASIN that is eligible but not qualifying may have an inventory health issue blocking the discount.
Utilization surcharge monitoring. StorageUtilizationRatio and UtilizationSurchargeRate show whether Amazon is applying a surcharge based on your storage utilization level. If your utilization ratio is elevated, this is the data that explains why your storage fees are higher than the base rate.
Dangerous goods classification check. dangerous_goods_storage_type shows how Amazon has classified each ASIN for hazmat storage. An incorrect classification can result in higher fees or fulfillment restrictions.
How Gorilla ROI Pulls This Data
Gorilla ROI connects to the Amazon SP-API ReportsAPI using the GET_FBA_STORAGE_FEE_CHARGES_DATA report type. Data updates automatically on a regular schedule. No csv exports. No manual downloads. The numbers are current the moment you open the sheet. Feed AI with our data to stay on top and ahead of your business.
For field definitions, see the Amazon Seller Data Supported article in our help center.
Other Reports and Supported Fields
Frequently
Asked Questions
How long does setup take?
How does it get data into Google Sheets?
Gorilla ROI connects directly to your ecommerce platforms and syncs structured data into Google Sheets automatically. Once connected, data stays available without re-downloading files.
What platforms can I connect?
Gorilla ROI supports Amazon, Shopify, and Walmart. The focus is ecommerce operations rather than connecting dozens of unrelated platforms.
Will my data stay accurate and update automatically?
Yes. Once connected, data syncs automatically based on your settings so Sheets stays current without manual exports or re-imports.
Does the data match my platform?
Yes. Gorilla ROI pulls data directly from the source. What you see in your sheet matches what the platform API reports.
Do I need coding or technical skills?
No. Gorilla ROI works through a point-and-click interface inside Google Sheets. Advanced users can use formulas if they want, but coding is not required.
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