Your sellers are your inventory. SkyCom staffs seller onboarding, listing support, and dispute resolution alongside buyer service — with separate teams, separate scorecards, and one platform standard. From five seats up, with zero setup fees.
5+ seats · No setup or training fees · 4–8 week launch · 50–70% lower cost
Marketplace support outsourcing means staffing both sides of a multi-vendor platform — the buyers making purchases and the sellers supplying inventory — with teams trained for each. It covers seller onboarding and activation, listing and catalog support, performance and payout inquiries, buyer service, and dispute mediation.
Marketplaces now account for roughly 67% of all global ecommerce sales, with global marketplace GMV estimated around $3.8 trillion in 2026. That scale is built on a support model most providers are not structured to deliver, because it requires serving two audiences whose interests routinely conflict.
Start with disputes, because that is where the sharpest finding sits. Industry benchmarks indicate marketplaces without a structured dispute process see seller churn up to three times higher than platforms running clear resolution workflows. A dispute is a moment of truth, and how it is handled decides whether a seller stays or moves inventory elsewhere.
Onboarding is the second pressure point. Platforms lose sellers not because features are missing but because activation takes too long or turns into a support problem. Onboarding stretching beyond fourteen days raises churn risk materially, and the metric that matters is activation rather than registration.
The acquisition environment has tightened too. Amazon new seller registrations fell 44% year over year to roughly 165,000 in 2025, according to Marketplace Pulse. When new seller supply contracts, retaining the sellers you already have stops being an operational nicety and becomes the growth strategy.
The scale underneath makes the arithmetic obvious. Third-party sellers now account for around 69% of Amazon’s total GMV, up from 60% in 2019. Etsy alone runs 7.5 million active sellers against 96 million active buyers. On a platform of any size, a single percentage point of monthly seller churn is a meaningful GMV number.
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