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Marketplace product intelligence

Know what to sell.
Before you buy.

Deep price history, current buy box, and profit math for Amazon & Walmart — so every sourcing decision is backed by years of data, not gut.

Start free See pricingNo card · 20 free lookups / mo
Amazon · live Walmart · live eBay · coming soon
Buy box · 90d
$24.97
▼ 25.6% Δ90d
LiveB07ZPKBL9V
Sales rank
#412
▲ top 1% in cat
Sold / month
8,400+
▲ +12.4% Δ30d
Tundra 30oz Insulated Tumbler with Lid & Straw, Stainless Steel, Powder Coat
Tundra · Drinkware
FBA14 sellers
The product

Five signals. One verdict.

Every screen pulls live from the same primary source so the price you see is the price the buy box just charged.

Years of price history. Every flip captured.

Interactive price, buy box, and sales-rank charts going back years. Drop annotations on the deepest discounts. Cross-reference with seller share to see exactly when the buy box changed hands.

90d low $18.85
Buy box New offer Sales rank

The Finder

Filter the catalog by price, rank, monthly sold, reviews and rating. Save the query, get a digest when winners drop in.

Price-drop alerts

Set a target and Knowite emails you the moment the buy box crosses it — on Amazon or Walmart. Stop refreshing tabs waiting for a deal.

Profit ledger

Referral, FBA, prep, inbound — all baked into the buy box price. Confirm margin before the PO leaves your inbox.

Amazon & Walmart, one shelf.

Cross-channel pricing, rank, and sales velocity side by side. Spot arbitrage in seconds. eBay coverage shipping Q3.

Amazon$27.99#145 · +18%
Walmart$31.97#84 · −2%
eBay—Q3 ’26
How it works

From listing to landed margin in three moves.

1

Pull the receipt

Drop an ASIN, paste a URL, or search by keyword. Years of price, rank, and buy box are on screen in moments.

2

Read the ledger

See who's holding the buy box, how often it flips, how deep discounts go, and how the rank moves with each price change.

3

Score the margin

Cost in, fees out, ROI on screen. Track the product and we'll ping you the moment the math turns favorable.

Browser extension

The whole panel, right on the listing.

Install the free Knowite extension and the data comes to you — the full intelligence panel loads inside every Amazon & Walmart product page. No tab-switching, no pasting ASINs.

Add it to Chrome

One click from the Chrome Web Store, then sign in with your knowite.com account to activate the panel.

Open any product

Browse Amazon or Walmart as usual. Knowite detects the product and loads its data automatically — right under the title.

Read the data in place

Price & rank history, buy box, fees, the live offer list, a cross-marketplace check, and one-click price-drop tracking.

Add to Chrome Free · Amazon & Walmart
amazon.com/dp/B07ZPKBL9V
Tundra 30oz Insulated Tumbler with Lid & Straw, Stainless Steel, Powder Coat
$24.97
knowite.com Live
HistoryOverviewOffersDataTrack
Buy box$24.97
Sales rank#412
Sold / mo8,400+
90d low $18.85
Why Knowite

One panel instead of ten tabs.

Sourcing research usually means juggling a price tracker, a rank estimator, a fee calculator, and a spreadsheet. Knowite puts all of it on the product page.

The usual way
  • A price-history tab open over here
  • A sales-rank estimator over there
  • Fees typed into a spreadsheet
  • Guesswork on real resale value
  • Manually re-checking for price drops
With Knowite
  • Years of price & rank history, charted
  • Buy box, sellers, and estimated monthly sales
  • Fees & profit baked into the buy-box price
  • Cross-marketplace check + eBay sold comps
  • Automatic price-drop alerts, emailed to you
Pricing

Start free. Scale when it pays.

20 live lookups a month, free forever — no card. Upgrade only when the spreadsheets stop fitting on one screen.

Free
$0/mo
20 lookups / mo · full price history
Starter
$29/mo
500 lookups · Walmart · the Finder
Most popular
Pro
$59/mo
2,500 lookups · alerts · CSV export
Business
$129/mo
10,000 lookups · API · 5 seats
Start free Compare all plansSave 17% billed yearly
FAQ

Questions, answered.

Where does the data come from?
Live pulls from Amazon and Walmart, backed by years of historical price and sales-rank data. Every number on screen traces to a real marketplace source.
What counts as a lookup?
Any time we fetch fresh live data — running a new search, opening a product, or refreshing its live offers. Results already cached from a recent search or view are free to revisit.
Is Knowite affiliated with Amazon or Walmart?
No. Knowite is an independent research tool and isn't affiliated with, endorsed by, or sponsored by Amazon or Walmart.
How accurate are the estimates?
Sales and revenue figures are modeled from sales rank, offer counts, and price history — directional signals to compare products, not guarantees.
Do I need a credit card to start?
No. The free tier gives you 20 lookups a month with full price history and price-drop tracking — no card, no time limit.
Can I cancel anytime?
Anytime. Your history stays available on the free tier; you only lose live refresh and the Product Finder.

The buy box doesn't wait.

Sign up free and pull live data on your first 20 products today. No card, no time limit on the free tier.

Start free See pricing