✦ Amazon repricer · wholesale & online arbitrage

The Amazon repricer
that never sells at a loss.

Opero3P prices from what you actually paid for each batch, adds Amazon's fees, storage and returns, and sets a floor it will never go under. Then it chases the Buy Box, creeps your price back up when it can, and tells you why every price changed.

14 days free · No card needed. Then $59/mo for 3 months with code LAUNCH59, $79 after.

Now on the Amazon Selling Partner Appstore Official SP-API connection Built by an active FBA seller
Opero3P repricer on a demo store: one product's floor, profit per unit, and 30 days of price and Buy Box history with the floor shown as a dashed line.
Demo store. One product's floor and profit per sale. It goes after the Buy Box, but never prices below the floor.

Your first ten minutes

What happens after you click.

No onboarding call. Three steps and the repricer is working on your listings.

Connect your Amazon account

One OAuth screen through Amazon's official Selling Partner API. Opero3P syncs your fees, inventory and listings daily; disconnect in one click whenever you like.

About 2 minutes

Add what you paid

Type it in, paste a list, upload your InventoryLab export or any spreadsheet, or log your purchases in Opero3P. Each batch keeps its own cost, and Amazon's fees, storage and returns are added for you.

Paste or upload

Switch on a few products

Pick a strategy (Auto is the easy choice) and switch it on. Opero3P goes after the Buy Box above your floor, checks every 15 minutes, and logs the reason for every price change.

Only what you switch on

Also included: see every brand you can sell.

Drop in a list of ASINs or a supplier's whole catalog and the Gating Scanner sorts every brand against your account: ungated, unlock with approval, or skip. Gated brands are re-checked every week, and you hear the day one opens up.

Start your free trial →

Who built this

I sell on Amazon. I built the tool I couldn't buy.

I run an FBA business, and for a long time my sourcing loop lived in four tools and a pile of spreadsheets: one to check gating, one to vet, one to reprice, and a weekend every month to work out what I'd actually made.

Opero3P is that loop in one place, built on the numbers I use in my own account every day: what I really paid, Amazon's real fees, and whether I'm allowed to list the thing at all. The books side was built and tested with a professional bookkeeper on a live Amazon business.

If you get stuck, email me. It's my inbox, not a ticket queue.

Rob · founder, Opero3P · rob@opero3p.com

Everything included

The whole loop, one subscription.

From "can I sell this?" to "is it worth it?" to "what did I actually make?" Same tool whether you're solo or running with a team.

Gating Scanner

Check thousands of ASINs against your account. A permanent registry of every brand you can sell today or unlock with approval.

Deal Check

Drop a supplier's price sheet; every line comes back Sell now, Unlock, Thin or Skip on your own criteria, with real FBA and referral fees.

Weekly rescan New

Every gated brand re-checked overnight. A Newly sellable list when one opens up, and a warning if a product becomes gated.

Storefront stalking New

Follow sellers. Each morning see only what they added since yesterday: first time on their storefront, or back in stock.

Repricer New

Chases the Buy Box without pricing below your real landed cost. Reacts in seconds, explains every move, one-click undo. Details →

Brand outreach + AI inbox

Sequenced campaigns from your own Gmail, personalized per brand and contact. Replies auto-classified so you only read the interested ones.

Bookkeeping & P&L New

Amazon's actual lines, FIFO cost of goods from what you paid, bank and card feeds via Plaid, and a monthly Accountant Pack workbook.

Discrepancies & money back New

Every refund matched to its return and reimbursement. What Amazon may still owe you, the days left to file, and the case written for you.

Bob for Chrome extension

Your gate status, what you paid last time and profit on your numbers, right on Amazon product pages. Included with Opero3P, starting with your trial.

Relationships Hub

Every brand and supplier in one place with invoices attached. Pull every invoice for an ASIN in one click for authenticity disputes.

Team logins

Owner, admin, operations, outreach and sourcing roles. Same price, no seat fees.

Money Events Calendar

Subscriptions, Amazon disbursements and renewals on one month view, with monthly and annual burn totals.

Repricer

A repricer that knows your real costs.

Most repricers only see the Buy Box. Opero3P sees what you actually paid, so it chases the Buy Box without pricing you into a loss. Every line below is from the app's own activity log on one real listing.

  • 6:28 PMNo change6 other Prime sellers within 1% of the $18.78 Buy Box, so Amazon rotates it. Not undercutting.
  • 4:00 PMPrice changed$18.79 → $18.78 · Match the Buy Box (crowded listing)
  • 3:15 PMPrice changed$18.47 → $18.73 · Match the Buy Box (crowded listing)
  • 2:30 PMLost the Buy Boxyou $18.47 · Buy Box $18.49
  • 2:15 PMWon the Buy Boxyou $18.47 · Buy Box $18.47
  • 2:00 PMPrice changed$18.65 → $18.47 · Step back
  • 1:45 PMPrice changed$18.47 → $18.65 · Creep up
One afternoon on a live listing. Crept up, lost the Buy Box, stepped back and won it again, then matched up once the listing got crowded.
  • Match, creep, step back. Wins the Buy Box, creeps the price up while you hold it, steps back the moment you lose it.
  • Knows when not to cut. When Amazon is already rotating the Buy Box between sellers at the same price, it holds instead of starting a race to the bottom.
  • Your floor, from your real cost. Never below the highest of your minimum ROI, profit and price, worked out from the landed cost of the units you hold.
  • Fast, and explained. Reacts to a competitor within seconds, checks every listing every 15 minutes as a backstop, and logs the reason for each move in plain English.
  • Guardrails. Daily limits on how far and how often a price moves, a strategy per product, and one-click undo.
See everything the repricer does →

Pricing

One price. Everything in.

No tiers, no upsells, no "the team features cost extra." Every part of the loop, one subscription.

Launch pricing
$79$59/month

Your first 3 months · offer runs through Dec 31, 2026

Then the regular $79/month. Cancel anytime.

Use codeLAUNCH59at checkout
  • Gating Scanner + Deal Check · check every ASIN against your account, with weekly rescans
  • Repricer · strategies per product, floors from your real landed cost
  • Brand outreach · campaigns from your Gmail, AI-classified inbox
  • Bookkeeping & P&L · bank & card feeds via Plaid, FIFO COGS, Accountant Pack
  • Bob for Chrome extension, Relationships Hub, storefront stalking, discrepancies
  • Team logins with roles · no seat fees
14-day free trial, no card to start. We only ask for a card on day 15, and only if you want to keep going. Nothing is charged before then. Outreach is capped at 50 emails during the trial.
Start your free trial →

Per-ASIN vetting and contact enrichment run on your own API keys, so that usage stays at cost, never bundled at our markup. See FAQ →

FAQ

Common questions

How does the free trial work? Do I need a card?
14 days of full access, and no card is needed to start. On day 15 we ask for one if you want to keep going; nothing is charged before then, and if you don't add one you simply aren't billed. To keep email sending fair during the trial, outreach is capped at 50 sends, enough to run a real test campaign on a small brand list.
What do I need to connect?

For gating and Deal Check: your Amazon Seller Central account, connected through the official SP-API. That's it.

For per-ASIN vetting: a market-data API key (most serious sellers already have one).

For outreach: your Gmail, plus an Apollo account for contact enrichment (the free tier works to start). You bring your own keys, so that budget is yours, not bundled at our markup.

Is the Amazon integration official?
Yes, through Amazon's official Selling Partner API. Connect once via OAuth and Opero3P syncs your fees, inventory and listing data every day. Refresh any ASIN on demand, and disconnect in one click. Refresh tokens are encrypted at rest.
How does the LAUNCH59 offer work?
Enter code LAUNCH59 at checkout and you pay $59/month for your first 3 months instead of $79. The offer is valid through December 31, 2026. After 3 months it moves to the standard $79/month.
Do I need another research subscription?
No. Keep whatever research tool you already like for picking brands; Opero3P tells you which of those you're gated on and vets the ASINs. And if you'd rather just drop 20,000 ASINs and see what's ungated without another subscription, that works too.
How does the repricer work?
Turn it on per product and pick a strategy, or set one across many products at once. It reacts to competitor price changes within seconds of Amazon's offer alerts, checks every listing every 15 minutes as a backstop, and never prices below your floor: the highest of your minimum ROI, minimum profit and minimum price, worked out from the average landed cost of the units you actually hold. Daily limits cap how far and how often a price can move, every change is logged with the reason, and any change can be undone in one click. More about the repricer.
Can I hand the books to my accountant?
Yes. Each month exports as one Excel workbook: P&L summary, SKU profitability, the COGS ledger showing which purchase each sale was costed from, an inventory roll-forward, and categorized overhead from your bank and cards. A Read me tab up front tells your bookkeeper where each number goes. It stands on its own, with no inventory software or accounting file needed alongside it.
Does it work for teams with VAs?
Yes, at the same price. Add multiple logins with role-based access: owner, admin, operations, outreach, sourcing. Each role sees the tabs relevant to their work. No seat fees, no per-VA pricing.
What's Bob for Chrome?
A companion Chrome extension included with Opero3P, starting with your 14-day free trial. It opens a panel on any Amazon product page with your gate status, what you paid last time and profit on your own criteria, and lets you save a lead or create a purchase without leaving the page. It needs an Opero3P account to work, and the app works without it.
Is my data safe? What about the bank feeds?
Your data is stored in an encrypted cloud database (Supabase); only you have access via your sign-in. Gmail tokens and API keys are encrypted at rest. Bank and card accounts connect through Plaid with read-only access: Opero3P can never move money, only the workspace owner can connect accounts or see bank lines, and disconnecting deletes the connection. Prefer not to connect? Import statements as CSV instead. You can export everything and delete everything at any time.
Can I cancel anytime?
Yes. Cancel from your account or by emailing support. No contracts, no cancellation fees. If you cancel mid-month you keep access until the end of your billing period.

Connecting your accounts

How Opero3P uses your Google account

Opero3P is an operations platform for Amazon sellers who source inventory through online arbitrage and from brands and distributors. Opening a wholesale account means emailing those brands, so Opero3P can optionally connect to your Gmail account and run that outreach from your own address. Connecting Google is optional — everything else in Opero3P works without it.

What we request, and why

  • Send email on your behalf (gmail.send) — to send the outreach emails you have set up, from your own mailbox, only to brand contacts you have added to a campaign. You control the message, the recipient list, the daily send limit and the sending window. We never email an address you have not added.
  • Your name and email address (userinfo.email, userinfo.profile) — to identify your account when you sign in with Google.

How replies reach Opero3P

Opero3P does not read your mailbox. Each outreach email carries its own reply address on reply.opero3p.com, so when a brand answers, the reply comes straight to Opero3P, the brand is marked as replied, and its follow-ups stop. Optionally, you can add a Gmail filter that forwards bounce notices only, so campaigns stop emailing addresses that no longer work. You create that filter yourself and can remove it any time.

Accounts connected before September 20, 2026 also granted read access (gmail.readonly), used only to detect replies to Opero3P’s own outreach. It stops being used by October 10, 2026, when those accounts reconnect with send-only access.

We never sell your Google data, never share it with third parties, and never use it to train AI models. You can disconnect Gmail at any time in Settings, or revoke access from your Google Account permissions page.

Read the full privacy policy →

Find out what you can sell. Today.

Connect your account, drop in a list, and you'll have your own ungated-brands list before the coffee's cold. Fourteen days to see if Opero3P belongs in your stack.

Create your free account →

No card needed to start · $59/mo for 3 months with LAUNCH59 · Cancel anytime