Bulk Sourcer: Analyze the Whole Supplier List,
Not One ASIN at a Time
Bulk Sourcer is the batch engine of the SellerMagnet Product Sourcer, built for sellers who evaluate whole supplier lists. Upload a CSV, paste identifiers or push products from the Chrome extension: every row comes back with demand, competition, real fees and profit at your cost, plus a clear BUY, MARGINAL or PASS verdict. It is the flagship feature of the top Sourcer tier.
A supplier price list lands in your inbox: 800 rows, a deadline, and cash on the line. Checking them one by one takes days you do not have. Bulk Sourcer analyzes up to 1,000 products in a single job and hands back a verdict on every row: BUY, MARGINAL or PASS.
1,000
products per job
2,500
fresh analyses per month
11
Amazon marketplaces
30
days of saved results
What is the Bulk Sourcer?
Bulk Sourcer is the batch engine of the Product Sourcer, built for wholesale and arbitrage sellers who evaluate lists, not single products. Upload a CSV, paste a list of identifiers or push the products you are browsing straight from the Chrome extension: every row comes back with demand, competition, trends, real fees and profit at your cost, plus a clear verdict. It is a premium feature of the top Sourcer tier.
Every job runs asynchronously in the background: you upload, the engine works through the rows, and an in-app notification tells you when the results table is ready. Nothing blocks your browser and nothing is lost if you close the tab.
- Up to 1,000 products per job across 11 Amazon marketplaces
- 23 result columns per row, from Buy Box to net profit at your cost
- BUY, MARGINAL or PASS verdicts driven by criteria you control
- Results saved for 30 days, exportable as CSV or JSON
Every row analyzed like you would by hand
The same depth as the single-product Sourcer, multiplied by a thousand.
Three ways in
Upload a CSV, paste a list of identifiers, or send the products on any Amazon search page from the Chrome extension. ASIN, EAN, UPC and ISBN all resolve automatically.
Supplier files just work
Comma, semicolon or tab separated, headers auto-detected, costs parsed even as €4,50 or 1.234,56, with a column-mapping step when your file is unusual.
Real fees, real profit
Detailed depth computes referral, fulfillment and other fees from your own Amazon account when connected (clearly flagged when estimated), plus VAT per marketplace, net profit, margin and ROI at your cost.
A verdict on every row
BUY, MARGINAL or PASS against criteria you control: minimum profit, ROI, margin, sales and maximum BSR. Change a criterion and every verdict recomputes live.
Competition and trends included
Offer count, Amazon on the listing, Buy Box owner, 30-day BSR and price direction and price volatility, on every product at no extra depth.
An advertising lens too
Break-even ACOS and maximum profitable bid per product, and real suggested bids with keyword volumes when your Ads account is connected.
Your costs in, your real margin out
A bulk verdict is only as good as the costs behind it. Bulk Sourcer reads the cost column straight from your supplier CSV, whatever the format: comma or semicolon separators, headers auto-detected, prices written as €4,50 or 1.234,56. When a file is unusual, a mapping step lets you point at the right columns once and move on.
On Detailed depth the fee side is just as serious: referral, fulfillment and other fees come from your own Amazon account when it is connected, and the results clearly flag any row where estimates had to be used instead.
- Costs parsed from EU and US number formats automatically
- Column mapping step for unusual supplier files
- Account fees when connected, flagged when estimated
- Edit any COGS in the results and watch profit recompute
BUY means what you decide it means
Every seller has different thresholds. Bulk Sourcer ships with sensible defaults, but minimum profit, ROI, margin, estimated sales and maximum BSR are all yours to tune.
Change a criterion and every verdict in the table recomputes live, with no re-run and no extra quota spent. The exports use your tuned criteria too, so the file your team reads always agrees with the screen.
- Five tunable thresholds: profit, ROI, margin, sales, BSR
- Verdicts recompute live as you adjust
- No quota cost for tuning or re-sorting
- Exports always reflect your current criteria
From results table to purchase order
A finished job is a working session, not a dead end. Sort by score, filter down to the BUY rows, and star the products worth a second look: they land in your watchlist with their target costs saved for next time.
When the shortlist is ready, export exactly what you see: CSV with the rows and columns you selected, or JSON with the summary and fee-basis metadata for your own tooling. Each row also deep-links into the single-product Sourcer for a final close-up before you commit cash.
- Star products into a watchlist with saved target costs
- CSV export respects filters and selection
- JSON export includes summary and fee-basis metadata
- Deep links into the single-product Sourcer per row
From upload to decision
Asynchronous, transparent and honest about every row it could not read.
- Live progress, in-app notification. Jobs run in the background with a progress bar. When the job finishes, a notification with a link to the results appears in your dashboard.
- Dedupe and error taxonomy. Duplicates are removed and counted. Failed rows are split into not found, temporary errors and unresolved identifiers, with a one-click re-run for whatever is missing.
- Results saved for 30 days. Reopen any job from the history without spending anything. After 30 days results expire, and the page tells you so honestly.
- Edit costs without re-uploading. Change the COGS of any row in the results and profit, margin, ROI and verdict recompute instantly. Saved target costs from your watchlist fill in automatically.
Three steps to a shortlist
From an 800-row price list to the products worth your cash.
Fast depth gives you a quick market read; Detailed adds fees and profit at your cost. Either way the job runs in the background and the results stay yours for 30 days.
1 Upload, paste or push
2 Let the job run
3 Filter by verdict, export
See how SellerMagnet presents its analysis before you sign up
The live demo opens a sandbox account where you can click through the tools with sample data, no setup required.
The demo uses sample data. Bulk Sourcer itself is part of the top Sourcer tier.
Fill a bulk job straight from an Amazon search page
The SellerMagnet extension puts a Bulk analyze chip on Amazon search results. One click collects the visible products of the page, up to 60 ASINs per push, and opens the Bulk Sourcer with the list and marketplace already filled in. You pick the depth and launch.
- Up to 60 ASINs per push, deduplicated automatically
- Marketplace detected from the Amazon page you are on
- The job arrives prefilled: you review, choose depth and launch
- Sponsored-banner and carousel ASINs are filtered out
The Bulk analyze chip appears for accounts on the top Sourcer tier.
Get the Chrome extensionHonest limits, by design
Clear caps and a live meter, no silent walls.
- 1,000 products per job. Each job analyzes up to 1,000 identifiers. Larger lists simply become two jobs.
- 2,500 products per month. The monthly quota is shown with a live used and remaining meter right at the top of the tool.
- One job at a time. Each project runs one bulk job at a time; under heavy load a job just takes a little longer while live traffic keeps priority.
- Premium, transparently. Bulk Sourcer is the flagship of the top Product Sourcer tier. Re-running fresh results shortly after costs nothing, and only freshly analyzed products count.
What you can count on
This is the engine room: what a job does while it runs, where your quota stands and how far the verdicts reach.
One job, the whole picture
Progress, error taxonomy, quota and history in one place. A bulk job is a working tool, not a black box.
1,000 rows per job
Paste, upload or push; a job takes up to 1,000 products at once, and larger lists simply become two jobs.
A pipeline you can watch
Rows move through resolving, analyzing and done while the feed ticks. Failed rows are named, counted and re-runnable in one click.
Verdicts at a glance
The results split into BUY, MARGINAL and PASS, so the shortlist emerges before you even touch a filter.
11 marketplaces
US, UK, DE, FR, IT, ES, CA, MX, BR, JP and IN, with fees and VAT computed per marketplace.
A quota you can see
2,500 fresh analyses per month with a live meter. Reopening saved results is free, and results stay for 30 days.
Bulk Sourcer vs the ways sellers vet lists today
An honest look at the three realistic options for working through a supplier list: SellerMagnet Bulk Sourcer, a hand-built spreadsheet, and generic bulk analyzers.
Swipe sideways to see the whole table
| What you need | SellerMagnet Bulk Sourcer | Manual spreadsheet | Generic bulk analyzers |
|---|---|---|---|
| Whole list in one pass | Up to 1,000 products per job | Row by row, tab by tab | Often, with varying caps |
| Fees behind the profit math | From your account when connected, flagged when estimated | Copied by hand, easy to get stale | Usually generic estimates |
| Verdict on every row | BUY, MARGINAL or PASS on your criteria | Your gut, row by row | Scores with fixed logic |
| EU supplier files | Semicolons, €4,50 and 1.234,56 just work | Manual cleanup first | Often US formats only |
| Failed rows | Named, counted, re-run in one click | Silent gaps in the sheet | Varies by tool |
| Costs after the run | Edit COGS and everything recomputes live | Redo the formulas | Often a fresh run |
| Where it lives | In the same suite as your Sourcer, Repricer and Analytics | A file on your desktop | A separate subscription |
A spreadsheet is free and generic analyzers are plentiful. The difference is fee accuracy at your cost, honest error handling and verdicts that follow your criteria instead of someone else's.
14-day free trial, credit card required. Bulk Sourcer is part of the top Sourcer tier.
Cancel anytime during the trial
Built for sellers who think in lists
If products reach you one at a time, the single-product Sourcer is enough. Bulk Sourcer earns its place the day a whole price list lands on your desk.
Wholesale and arbitrage sellers
Supplier price lists with a deadline and cash on the line.
- Turn an 800-row CSV into a BUY shortlist in one job
- Costs read straight from the supplier file, EU formats included
- Verdicts tuned to your minimum profit, ROI and sales
Agencies and multi-account teams
Vetting lists on behalf of clients, with numbers you can defend.
- Fee basis flagged on every row: account fees or estimates
- CSV and JSON exports your clients and tools can read
- Jobs and results stay reviewable for 30 days
Brand owners vetting suppliers
Checking a catalogue before signing a distribution deal.
- Demand, competition and Amazon presence per product
- Spot PASS-heavy catalogues before the negotiation
- Deep-link any row into the full single-product analysis
Credit card required. Bulk Sourcer is included in the top Sourcer tier.
Try the free tools first, no bulk job needed
Not ready for whole lists yet? These free SellerMagnet tools answer the small questions supplier lists raise, one product at a time.
Amazon Fee Calculator
Look up the FBA and FBM fees for any ASIN before you commit to a price: the same kind of fee math the Bulk Sourcer runs on every row.
- FBA and FBM fees side by side
- Revenue, profit and ROI at your buy cost
- Free, straight from the browser
Amazon Title Checker
Paste a product title and check it against Amazon style rules before your listing goes live.
- Checks titles against Amazon style rules
- Catches issues before the listing goes live
- Free, straight from the browser
EAN to ASIN Converter
Supplier lists speak EAN, Amazon speaks ASIN. Convert between them before you even open a bulk job.
- Converts supplier EANs to Amazon ASINs
- Handy prep before a bulk CSV upload
- Free, straight from the browser
Bulk Sourcer: frequently asked questions
Straight answers on limits, fees, exports and access.
· Written by the SellerMagnet team
Covers the questions sellers ask most before their first bulk job.
Related tools
Product Sourcer
Deep single-product analysis in the dashboard and on Amazon pages via the Chrome extension.
Analytics Dashboard
Per-SKU profit with every Amazon fee, VAT and cost accounted for.
Your next supplier list,
answered by tomorrow
Upload the CSV, tune your criteria and let the verdicts tell you where the cash should go.
14-day free trial (credit card required) • Bulk Sourcer is included in the top Sourcer tier
