$79 · pet supplements sub-niche · emailed within minutes

Pet supplements on Amazon: the data nobody publishes in one place.

Top-100 best-sellers, 1-star review pain patterns, BSR trajectory over 90 days, and competitor density for the pet supplements sub-niche — built from public Amazon bestseller lists, review scrapes, and Keepa deltas. No paid-tool subscription required to use it.

100Top-100 best-sellers profiled

2471-star reviews tagged by pain

90dBSR + price trajectory window

Why this exists

The data lives in five paid tools. It shouldn't.

If you're researching pet supplements on Amazon, you currently need Helium 10 for keyword volume, Jungle Scout for demand estimates, Keepa for BSR, a separate review-scraping tool for review pain, and a manual spreadsheet to join it all. None of those tools publish their data in a way that lets you answer the actual question: is pet supplements a niche worth entering this quarter, and what are the 1-star pain patterns I should design around?

This pack joins those public signals into a single deliverable, scoped to one sub-niche. It's not a replacement for those tools — it's the answer to the "should I enter this niche" question, in one PDF.

What's inside

Table of contents.

Sub-niche sizing: TAM, SAM, and current best-seller concentrationp. 1-6
Top-100 best-seller breakdown: price tiers, review velocity, brand mixp. 7-14
1-star review pain taxonomy: 247 reviews tagged across 7 failure modesp. 15-22
BSR + price trajectory: 90-day view of top-20 listingsp. 23-28
Competitor density: how many sellers compete per top keyword clusterp. 29-34
Entry verdict: where the white-space is and where the saturated zones arep. 35-40
Appendix: raw bestseller list, review tags, BSR data, methodologyp. 41-52

Sample pages

Three real pages from the pack.

Sample page · 1-star review pain taxonomy p. 17

Pain pattern #3 of 7: "My dog refused to eat it"

Across 247 sampled 1-star reviews on top-100 pet supplement listings, palatability complaints are the second-most-common failure mode (28% of 1-stars). The pattern is consistent across formats — chews, liquids, powders — but most acute in chew formats where buyers report "spit it out, then buried it in the yard."

"Bought the calming chews for my lab. He ate one, walked away, and never touched the bag again. Tried hiding it in peanut butter — same result. $45 down the drain." — verified Amazon 1-star review, top-20 calming-chew listing

Pain pattern	% of 1-stars	Affected formats
No noticeable effect	34%	All formats
Refused to eat / palatability	28%	Chews > liquids > powders
Caused digestive upset	16%	Chews, liquids
Packaging / quality issue	11%	Liquids
Wrong size / count	7%	All formats
Other	4%	—

White-space read: The 28% palatability failure rate on chews is the largest unaddressed design problem in the sub-niche. New entrants with a palatability-first formulation claim have a credible positioning wedge — "the chew dogs actually eat" — that none of the top-20 listings currently owns.

Methodology

How the data was gathered.

All inputs are public. No paid-tool subscription is required to verify any number in this pack.

Best-seller list

Amazon public bestseller page, refreshed daily, top-100 captured per category

Review scrape

247 1-star reviews sampled across top-100 listings, manually tagged into 7 pain buckets

BSR trajectory

Keepa public free-tier deltas, 90-day rolling window, top-20 listings

Competitor density

Amazon search-result counts per top keyword cluster, captured weekly

Geographic scope

Amazon US (amazon.com)

Refresh cadence

Updated quarterly. Next refresh: Q1 2027

What sellers are saying

Why this data shape matters.

Verbatim from r/FulfillmentByAmazon — the subreddit where FBA sellers share their actual workflow pain.

"You just need to have a dashboard that you can dump raw data from the report that will automate which FBA shipment, transaction Ids or FNSKU..."

— r/FulfillmentByAmazon, "What is the best process for handling Amazon reimbursements?" thread

"Since you cannot restrict Amazon's refund policies, your best defense is to aggressively audit your FBA Returns Report monthly for orders..."

— r/FulfillmentByAmazon, "Amazon returns and refunds, how to manage as a seller"

Sellers aren't asking for another paid tool. They're asking for the data joined into a single artifact they can act on. That's what this pack is.

Deliverables

What you get.

Main report (PDF, 52 pages)Sized for reading on a laptop or printing chapter-by-chapter.
Raw data appendix (CSV, 4 files)Best-seller list, tagged 1-star reviews, BSR trajectory, competitor counts. Yours to re-analyze.
Next-sub-niche early-access listGet notified 5-7 days before the next sub-niche pack ships. Opt-in only; unsubscribe is one click.

Pricing

One price. Yours to keep.

$79

One-time payment. Report arrives in your inbox within minutes. You keep the files.

Note on refunds: After Stripe checkout, the FBA Report PDF and raw CSVs are emailed to the address you provided within minutes. Your 7-day refund window starts when the report email arrives and closes the moment you download the attached files. Data-error refunds are honored for 30 days regardless. Full policy.

License: Internal use at one company. Team license for up to 5 seats included; larger teams contact us for a 10-seat license at $197. Resale or public redistribution of the raw data files is not allowed.

Who's behind it

Why you should trust this data.

The ReportSlab Research Desk

An institutional research desk publishing publicly-assembled niche datasets. We join bestseller lists, review signals, BSR trajectories, and competitor density into single sub-niche reports so operators don't have to maintain five paid-tool subscriptions to answer one question.

Publicly-assembled datasets refreshed on a defined cadence
Niche selection by buyer-trigger frequency, not editorial preference
Methodology disclosed on every page; raw data included in the appendix

Common questions

Honest answers.

Is this just scraped data I could get myself?

You could scrape the same raw inputs. You wouldn't join them into the same artifact. The value is the joining — bestseller list + 1-star taxonomy + BSR trajectory + competitor density — scoped to one sub-niche, with the white-space read at the end. If you only want raw data, the appendix CSV is included and you can do the analysis yourself. The report is what you couldn't easily do in a week.

How fresh is the data?

Captured within 14 days of pack release. The Q4 2026 refresh is dated on the cover page. If you buy now, you get the Q4 2026 refresh; the Q1 2027 refresh ships to your email automatically when it lands.

What if the sub-niche is wrong for me?

7 days from when the email arrives. The refund window closes the moment you download the report or click "I've accessed my report." See the full refund policy for the data-errors exception, which stays open for 30 days regardless of download.

Will you do my specific sub-niche?

Not as a custom report at this price. The point of a $79 pack is that the data is already joined for the sub-niche you picked. If you want bespoke sub-niche research scoped to your specific product — different category, different angle, different sample — that's a separate scoping engagement at a different price point. DM to discuss.

Get the pet supplements pack.

Pet supplements only. 52 pages. Emailed to you within minutes. One-time payment. You keep the files.

Before you buy: Refunds are available for 7 days from email delivery. Once you download the report, the window closes. Data-error refunds are honored for 30 days regardless. Full policy.

Get the report · $79

7-day refund window from email delivery; closes on download. Data-error refunds honored for 30 days regardless. Full policy.