Whatnot Vertical Benchmarks · May 2026

Baseball Cards on Whatnot: the operating benchmarks

kksportscards runs $43.8K/stream across 61 shows. See how graded slab anchoring closes the baseball card discount gap and where the attribution leak hides.

$44K/stream Revenue / stream kksportscards runs $43,791/stream across 61 shows/month — the category trades at a 30–40% discount to football and basketball on secondary markets, but volume makes up the GMV.

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Top sellers in this vertical

Ranked by avg rev/stream. All data from the Resellbot 30-day snapshot (May 2026).

Leaderboard Rank #17

@kksportscards

Avg rev/stream $44K

Shows/month 61

Monthly GMV $2.7M

Est. fee burn/yr $3.5M

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Vertical economics

Category-level data from the 1 Baseball Cards sellers in our 25-seller leaderboard.

Median rev/stream

$44K

across 1 seller

Median cadence

shows/month

Total category GMV

$2.7M

combined 30-day

Attribution gap typical

15–28%

of GMV unattributed

Baseball card mechanics: closing the discount gap with premium formats

Format-specific mechanics that drive (or drain) per-stream revenue in this category.

The category discount is real. Baseball cards historically trade 20–30% below football/basketball on secondary markets. Your per-stream revenue will be lower — but that doesn't mean it's fixed. Premium show formats can close the gap.
Graded slabs change the math. PSA 9+ vintage (Mickey Mantle, Willie Mays) or PSA 10 modern stars (Shohei, Acuña) can anchor a show at $500–$5,000+/card. Even one graded anchor per show reshapes buyer expectations.
Game-worn and auto'd cards carry a premium. Authentication docs visible on-stream (BGS slabs, JSA certs) lift conversion rates. Baseball collectors are skeptical — show the cert.
Cadence middle-ground. kksportscards runs 61 shows — mid-range for the leaderboard. Testing concentration to 40 high-premium shows vs. 80 volume shows is the primary attribution experiment to run.

Incrementality calculator

Pre-filled with Baseball Cards median benchmarks. Edit to match your numbers.

Your attribution gap

Estimate the revenue your attribution model isn't seeing — based on the 35.3% format-lift baseline from the LiftOS playbook.

Monthly GMV ($)

Shows/month

Est. annual platform fees (11%) —

Est. avg rev/stream —

Est. incremental revenue (35.3% lift) —

Potential annual upside —

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Baseball Cards — Monday checklist

5 format-specific actions to run at the start of every week.

Source 5–10 graded slabs (PSA 9+) per month for dedicated premium shows. Track whether anchor items lift total per-stream GMV vs. your bulk-break baseline.
Calculate your average ticket per show: total GMV ÷ units sold. If below $50/unit, you have a product mix problem — not a cadence problem.
Test a "vintage night" show format — all pre-1980 authenticated cards. Measure whether it pulls a different buyer segment with higher willingness to pay.
UTM-tag all external links. Baseball card buyers frequently cross-shop eBay, PWCC, and Alt — measure what % of your buyers are platform-native vs. external.
Run a 30-day holdout: hold one show per week as "organic only" (no promotion). Measure GMV delta. That's your paid promotion incrementality per show.

The Operating Signal — Weekly

The operating signal that works in social commerce, weekly.

No fluff. Attribution benchmarks, Monday checklists, and format math from live commerce operators.

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