Reference

Amazon seller operations

These pages are written for the operator, not the shopper. Each one explains what a metric actually measures, which lever moves it, and where the official definition lives. Numbers that change by marketplace or quarter are described as models, not quoted as permanent rates.

Why operations deserves its own reference

Most seller content explains how to launch. The expensive mistakes happen after launch: a metric crosses a threshold, a listing disappears from search, a fee line is added and nobody updates the price. Operations is the part of the business that compounds quietly in either direction.

Every page here is paired with a calculator or an adjacent playbook. Read the metric, then put your own numbers into the tool. A definition without your data is trivia.

How to read the numbers

Amazon publishes thresholds and fee schedules per marketplace and revises them by notice. This reference describes the structure and the direction of each rule, and links to the official page where the current number lives. When a page gives a range, treat it as a planning band rather than a quote.

Nothing here is legal, tax or customs advice. Where a rule can suspend an account or trigger a penalty, verify it in Seller Central before you act.

All entries

Account health rateThe three rates that can suspend an account, what each one counts, and the weekly routine that keeps them visible. Listing suppressionSuppression is usually a missing attribute or a policy flag, not a ranking penalty. How to detect it and recover without guessing. Buy box eligibilityThe buy box is a competitive score, not a permanent setting. The factors you control and the ones you do not. ACoS and TACoSACoS measures the ad lane. TACoS measures the business. Mixing them up produces the wrong budget decision. PPC placementPlacement multipliers change the bid, not the quality score. Measure the incrementality before raising them. Review policyIncentives, review swaps and family reviews are prohibited. The compliant ways to ask, and what to do when a competitor cheats. Reimbursement claimsThree claim families, the evidence each one needs, and the monthly reconciliation that stops money leaking. FBA restock limitsRestock limits cap how much inventory you can send. Plan within the limit instead of discovering it at the shipment screen. Inventory Performance IndexIPI is a composite of sell-through, excess, stranded inventory and in-stock rate. Fix the input, not the score. Removal orderRemoval is a cost decision: return to you, dispose, or liquidate. Compare the fee with the value of the unit. Inbound placement feeAmazon now prices where your inventory lands. Splitting shipments or paying the fee are the two levers. Low-inventory-level feeA fee for keeping historical days of supply below the threshold on standard-size products. Stockouts now have a second cost. Aged inventory surchargeStorage gets more expensive as inventory ages. The tiers, the four exits, and why removal timing matters. FBM handling timeHandling time sets the delivery promise. Late shipment rate is measured against it, not against your hopes.

Use these with

TACoS calculator

ACoS, TACoS, break-even ACoS and ad profit from your own ad and revenue numbers.

Open tool →

Restock calculator

Days of cover, reorder point, stockout timing and a suggested order from sales and lead time.

Open tool →

Amazon FBA Fee Calculator

Model the referral fee, FBA fulfilment, subscription, ads and returns in the order Amazon deducts them.

Open tool →

Inventory Cash-Flow Calculator

See the cash tied in stock and payout float, the cash cycle in days, runway and the reorder point.

Open tool →

Tell me when the rules change

De minimis thresholds, import tax rates and marketplace fee schedules move more often than most price lists. Leave an address and we will send a short note when one of the tracked markets changes.

Ask a compliance question

Free first answer by email. Tell us the destination, the product and the channel — we will point you to the rule and the official source. No obligation, no sales sequence.

Free first reply. Prefer your own mail app? rescue@openyuri.com. We store the message to reply; no marketing unless you ask.