> ## Documentation Index > Fetch the complete documentation index at: https://docs.vortexiq.ai/llms.txt > Use this file to discover all available pages before exploring further. # Alibris Share of Book-Trade Revenue, Alibris > Channel mix card, flags when Alibris share rises / falls vs sibling book marketplaces. How to read it, why it matters, and how to act on it. **Metrics type:** [Cross-Platform Metrics](/nerve-centre/overview#metrics-types-explained) • **Category:** [Marketplace](/nerve-centre/connectors#connectors-by-type) > Channel mix card, flags when Alibris share rises / falls vs sibling book marketplaces. ## At a glance > Channel-mix view: Alibris revenue as a percentage of the merchant's total book-trade marketplace revenue (Alibris + AbeBooks + Amazon Books, summed). Flags when Alibris's share moves materially up or down month-over-month. | | | | ----------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **What it counts** | `alibris.total_revenue / (alibris.total_revenue + abebooks.total_revenue + amazon_books.total_revenue)`, computed monthly across the trailing 90 days. Settlement currency normalised. | | **API endpoint + report** | Derived. Sums each connected book-trade marketplace's order revenue per month (gross of commission, before refunds), then computes Alibris's share. Recomputes daily but presented as 3-month rolling. | | **Fees / commission** | **Gross of commission.** AbeBooks 8%, Alibris 15%, Amazon 15%+; the share calculation uses gross. | | **Refunds** | NOT deducted on either side. | | **Cancellations** | Excluded everywhere. | | **Currency** | Single settlement currency, FX-normalised. | | **What "moves" the share** | (1) Alibris listing health (suspensions, failed feeds drop share); (2) sibling marketplace activity (Amazon promo or AbeBooks feature placement); (3) buyer-side platform shift; (4) inventory mix (academic on Alibris, rare on AbeBooks, commodity textbook on Amazon). | | **Healthy share range** | Bookseller-dependent. Most multi-marketplace booksellers run Alibris at 12 to 25% share. Outside that range merits strategic review. | | **Concentration risk** | Alibris share above 40% on a multi-marketplace seller is concentration risk. Most useful for spotting *change* not absolute level. | | **Multi-marketplace overlap** | The three sibling shares sum to 100%. | | **Time window** | `90D` (3-month rolling, monthly granularity). | | **Alert trigger** | None by default. Add custom alert if your strategic share range is well-defined. | | **Roles** | owner, finance, marketing. | ## Calculation Calculated automatically from your Alibris data. See the At a glance summary above for what the metric tracks and the worked example below for a typical reading. ## Worked example A US bookseller, 90-day window 02 Feb 26 to 01 May 26, settlement USD. Mixed inventory: 70% commodity, 30% rare/academic. | Month | Alibris revenue | AbeBooks revenue | Amazon Books revenue | Total | Alibris share | | ------------------ | --------------- | ---------------- | -------------------- | ------------- | ------------- | | Feb 26 | \$15,820 | \$35,100 | \$17,940 | \$68,860 | 23.0% | | Mar 26 | \$17,260 | \$36,840 | \$18,610 | \$72,710 | 23.7% | | Apr 26 | \$16,498 | \$37,468 | \$18,605 | \$72,571 | 22.7% | | **90-day rolling** | **\$49,578** | **\$109,408** | **\$55,155** | **\$214,141** | **23.1%** | Card reads **23.1% (Alibris share, 90-day)**, with mild fluctuation around 23%. Stable. Six things to notice that are specific to Alibris and the broader book trade: 1. **The 23.1% share is right at the typical band for Alibris.** Most multi-marketplace booksellers run 15 to 25% Alibris share; 23% is solidly mid-range. No strategic concern. 2. **Academic/institutional concentration drives the Alibris share floor.** Of the $16,498 Apr 26 Alibris revenue, ~$5,800 came from Library Services institutional buyers averaging \$44/order. Without the institutional cohort, Alibris share would drop to \~16%. 3. **AbeBooks at 51.7% is the dominant marketplace for this seller.** Rare-book mix concentrates on AbeBooks; the bookseller's heavy rare-book inventory pulls AbeBooks share up. A more commodity-tilted catalogue would shift toward Amazon Books. 4. **Amazon Books at 25.6% is volume-driven.** \~800 orders/month at \$23 average; Amazon's Prime delivery and trust tier capture commodity volume Alibris doesn't. 5. **Concentration risk: 23% Alibris means 23% of revenue exposure to Alibris-side outage.** Below 40% concentration is healthy. The bookseller can pause Alibris for a week (e.g. for credential rotation maintenance) without catastrophic revenue impact. 6. **The 90-day rolling view dampens seasonal spikes.** US back-to-school in Aug-Sep typically pushes Alibris share UP (academic cohort is busiest then) by 2 to 5 percentage points; the 90D window smooths. ## Sibling cards merchants should reference together Share of book-trade revenue is the channel-mix view. Pair with these: | Card | Why pair it with Share of Book Revenue | | -------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------ | | [Total Revenue](/nerve-centre/kpi-cards/alibris/total-revenue) | The numerator. | | [Net Revenue](/nerve-centre/kpi-cards/alibris/net-revenue) | Margin-adjusted view; Alibris's 15% commission means \$1 of share is worth less than AbeBooks's at 8%. | | [ISBN Drift vs AbeBooks + Amazon](/nerve-centre/kpi-cards/alibris/isbn-drift-vs-abebooks-amazon) | Cause check. | | [Top-Velocity ISBNs Missing on Alibris](/nerve-centre/kpi-cards/alibris/top-velocity-isbns-missing-on-alibris) | Cause check. | | [Suspended Listings](/nerve-centre/kpi-cards/alibris/suspended-pending-listings) | Acute cause check. | | [Listing Quality Score](/nerve-centre/kpi-cards/alibris/listing-quality-score) | Leading indicator. | | [AbeBooks Share of Book Revenue](/nerve-centre/kpi-cards/abebooks/abebooks-share-of-book-trade-revenue) | Mirror view. | | [Amazon Books Share of Book Revenue](/nerve-centre/amazon/amzn_xc_share_of_book_revenue) | Mirror view. | ## Reconciling against the vendor's own dashboard **Where to look in the Alibris seller dashboard:** Alibris does not publish a cross-marketplace channel-mix view; this is a Vortex IQ derived metric. 1. [**Sellers → Reports → Sales Summary**](https://www.alibris.com/sellers/reports). Cross-check the Alibris numerator. For sibling-side cross-validation, use each marketplace's own report. **Why our number may differ from manual cross-check:** | Reason | Direction | Why | | ------------------------------- | ----------------- | ------------------------------------------------------------------------------------------------------ | | **Refresh cadence per sibling** | Either | Sibling-marketplace data may lag. Wait until day 5 to 7 of each month for reliable monthly comparison. | | **Time zone boundary days** | Tiny | Each marketplace uses its own TZ for monthly closes. | | **FX rate per sibling** | Tiny | Each marketplace's own FX rates compound across three. | | **Refund timing** | Either | Refund-date allocation differs per marketplace. | | **Sibling not yet connected** | Card shares wrong | Two-marketplace setups produce a degenerate denominator. | **Cross-connector reconciliation:** | Card | Expected relationship | What causes legitimate divergence | | --------------------------------------------------------------------------------------------------------------- | ------------------------------ | -------------------------------------------------- | | [`abebooks.ab_xc_share_of_book_revenue`](/nerve-centre/kpi-cards/abebooks/abebooks-share-of-book-trade-revenue) | Sum to 100%. | Same numerators/denominators with shifted framing. | | [`amazon.amzn_xc_share_of_book_revenue`](/nerve-centre/amazon/amzn_xc_share_of_book_revenue) | Sum to 100%. | Same. | | [`shopify.total_revenue`](/nerve-centre/kpi-cards/shopify/total-revenue) | Not in denominator by default. | DTC excluded from book-trade marketplace mix. | ***
Marketplace-peer documentation cross-reference * [`abebooks.ab_xc_share_of_book_revenue`](/nerve-centre/kpi-cards/abebooks/abebooks-share-of-book-trade-revenue) * [`amazon.amzn_xc_share_of_book_revenue`](/nerve-centre/amazon/amzn_xc_share_of_book_revenue)
## Known limitations / merchant FAQs **My Alibris share dropped 5 percentage points in one month. What just happened?** Three causes: (1) Alibris listing-health event (suspensions, feed outage); (2) sibling marketplace promotion; (3) Alibris policy change excluding a category. **My Alibris share is 38%. Is that too concentrated?** Not yet. Most multi-marketplace booksellers run Alibris at 12 to 25%. 38% means you're heavily leveraging Alibris (often a sign of strong institutional / Library Services traffic). Concentration above 50% deserves diversification work. **Concentration risk operational playbook?** (1) Audit listing parity on under-developed siblings; (2) tune sibling-marketplace pricing; (3) categorise inventory by marketplace strength; (4) re-measure quarterly. **Multi-marketplace, why doesn't this card include my DTC site?** By default, denominator is book-marketplace revenue only. DTC has different unit economics (no commission, higher CAC); blending dilutes the marketplace-mix signal. **ISBN match quality, does it affect this card?** Indirectly. Listings without valid ISBN don't appear in cross-marketplace order matching. \<0.5% percentage-point impact. **Listing-quality / Buy Box, what's the share leading indicator?** [Listing Quality Score](/nerve-centre/kpi-cards/alibris/listing-quality-score) leads share by 14 to 30 days. **Inventory-sync lag, can sync issues distort the share?** Yes briefly. Feed outage drops Alibris orders while siblings continue, dropping share temporarily. Cross-reference [Last Successful Upload](/nerve-centre/kpi-cards/alibris/last-successful-upload) to disambiguate. **Rare books vs commodity books, how do they tilt the share?** Rare books concentrate 60 to 80% on AbeBooks. Commodity textbooks concentrate 50 to 70% on Amazon. Academic / Library Services concentrates 30 to 50% on Alibris. Alibris's natural niche is the academic-institutional tilt. **When does the card update vs my interventions?** 90D rolling view; expect 30 to 90 days to see effect of any single playbook action. Run share-mix changes quarterly, not more. **Alibris-specific: Library Services driving my share, is that good?** Yes generally. Library Services revenue is high AOV, low return rate, low cancellation rate, repeat purchasing. A bookseller with 25%+ Alibris share due to institutional concentration has a defensible niche. The risk is institutional procurement-policy changes; track [Customer Type breakdown](/nerve-centre/kpi-cards/alibris/top-titles-by-revenue) sub-cuts. *** ### Tracked live in Vortex IQ Nerve Centre *Alibris Share of Book-Trade Revenue* is one of hundreds of KPI pulses Vortex IQ tracks across Alibris and 70+ other ecommerce connectors. Nerve Centre runs the detection layer; Vortex Mind investigates the cause when something moves; Ask Viq lets you interrogate any number in plain English. [Start for free](https://app.vortexiq.ai/login) or [book a demo](https://www.vortexiq.ai/contact-us) to see this metric running on your own data.