SellerGuards Blog

Practical guides for Amazon sellers — profit analytics, inventory costing, FBA fees, sourcing, and more.

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· 11 min read
Amazon's 75-Character Title Limit: What Changed and What It Costs You
Titles outside media are capped at 75 characters and a new 125-character Item Highlights field sits underneath. What the AI rewrite does to your listings, who gets a review window, and how to measure the impact per ASIN.
Listings SEO
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· 9 min read
Amazon Q4 Storage Fees: What Holding Inventory Through Peak Season Really Costs
Storage rates roughly triple from October to December, the aged-inventory surcharge stacks on top, and cutting stock too far triggers a third fee. What each one costs, and where removal beats holding.
Inventory Profit
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📈
· 9 min read
TACoS vs ACoS: The Amazon Ad Metric That Actually Tracks Your Business
ACoS swings with bids, seasons, and the organic-vs-ad split — which makes it noisy for long-term calls. TACoS looks at how ads move your whole business. When each metric matters, with a six-month worked example.
Advertising Growth
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· 10 min read
Amazon FBA Reimbursements: How to Find Money Amazon Owes You
Amazon loses, damages, and miscounts seller inventory every day — and only sometimes pays you back without you asking. Learn the 6 categories, the 60-day claim window, and how to file before the money disappears.
Reimbursements Lost Money Back
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· 8 min read
COGS for Amazon Sellers: How FIFO Costing Actually Works
Most sellers know their revenue. Far fewer know their real cost. A full guide to COGS, FIFO, and accurate margin tracking.
Accounting Profit
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