Opero3P Blog
Practical guides for Amazon FBA sellers
Written by Rob Fogarty, an OA and wholesale seller who built Opero3P to run his own store. No fluff, just what I've learned selling on Amazon.
AI for sellers
I Connected Claude to My Amazon Business. Here's What It Can Answer About My Real Numbers
Ask Claude about your real landed cost, inventory, purchases and repricer history. How the connector works, what it can see, and how changes stay in your hands.
Repricing
Meet Bob: An AI That Watches My Amazon Repricer Overnight and Tells Me What Needs Me
Hourly plans per listing, an optional switch that changes strategy when the market does, and a briefing every morning. What it costs and the guardrails.
Inventory
Where Is My Inventory? Tracking Amazon FBA Restock From Purchase to Live
Ordered, received, shipped, live: the four dates that tell you when stock will sell, your real lead times per supplier, and what's stuck.
Sourcing
Two Sourcing Signals I Trust: What Other Sellers Just Added, and What I Just Got Ungated In
When several sellers you follow add the same product, or you suddenly get ungated in a brand, that's a lead. Real numbers from my store and how I rank them.
Profit
Your Amazon FBA Landed Cost Is Probably Wrong. Here's How to Split Freight Properly
One freight bill, ten different products. Split it by units, value or weight, and why a wrong split quietly breaks your margins and your repricer floor.
Repricing
How Fast Should an Amazon Repricer React? Real Numbers From My Store
Measured on a live store: reacting to competitor price changes in 10 to 30 seconds, and why the floor and strategy matter more than speed.
Seller tools
The Best Online Arbitrage Tools in 2026: What I Used, What I Cancelled, and Why My Overhead Is Now Just Keepa
An honest rundown of the OA tools I paid for, with current prices, and how I went from $400+ a month in subscriptions to just Keepa.
Repricing
Why Your Amazon Repricer Is Costing You Money (and Why I Ended Up Building My Own)
Stale floors, races to the bottom, never raising prices, missing strategies and no guardrails: the five ways repricers quietly lose you money.
Bookkeeping
Your Amazon Payout Isn't Your Profit: What My Bookkeeper Found That Seller Central Doesn't Show
Unresolved reimbursements, held funds, sales tax and inventory timing: the gap between Amazon's numbers and real books.
Wholesale
Amazon Wholesale Brand Outreach: How I Went From Writing Emails One by One to Sending 300 a Week on Autopilot
Qualify products before brands, find the right contact, write short emails, follow up without burning your inbox, and automate the whole thing.
Reimbursements
Amazon FBA Reimbursements: I Filed 5 Cases This Week and All 5 Were Denied. Here's What That Taught Me.
The 120-day window, customer-damaged grades, non-returnable items and reversals, plus a checklist for the claims that actually get paid.
Ungating
How to Check If You're Ungated on Thousands of Amazon ASINs at Once
Check up to 5,000 ASINs from a Keepa or SmartScout export against your own account, read the results right, and stalk the sellers on a listing.
Sourcing
Amazon Storefront Stalking: How to See What Other Sellers Add Every Day
Find sellers worth following from a Keepa seller export, check their whole storefronts against your account, and get a daily list of just what's new.
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