📊 Source Intelligence
Useful for: Marketplace mechanics and reseller economics.
What we learn from them: Each marketplace's own seller center beats third-party advice; the community sites win on honest numbers.
How we compete: We compete on niche depth — golf carts, AV gear, specific categories where general advice fails.
| Source | Group | What it is |
|---|---|---|
| eBay ebay.com | Marketplaces | Auctions and fixed-price resale. |
Why it’s on the study list: filed under Marketplaces — Auctions and fixed-price resale. Study angle: Each marketplace's own seller center beats third-party advice; the community sites win on honest numbers. Our edge: We compete on niche depth — golf carts, AV gear, specific categories where general advice fails. Visit ebay.com → | ||
| Reverb reverb.com | Marketplaces | Music and audio gear. |
Why it’s on the study list: filed under Marketplaces — Music and audio gear. Study angle: Each marketplace's own seller center beats third-party advice; the community sites win on honest numbers. Our edge: We compete on niche depth — golf carts, AV gear, specific categories where general advice fails. Visit reverb.com → | ||
| Swappa swappa.com | Marketplaces | Used phones and tech. |
Why it’s on the study list: filed under Marketplaces — Used phones and tech. Study angle: Each marketplace's own seller center beats third-party advice; the community sites win on honest numbers. Our edge: We compete on niche depth — golf carts, AV gear, specific categories where general advice fails. Visit swappa.com → | ||
| Facebook Marketplace facebook.com | Marketplaces | Local resale. |
Why it’s on the study list: filed under Marketplaces — Local resale. Study angle: Each marketplace's own seller center beats third-party advice; the community sites win on honest numbers. Our edge: We compete on niche depth — golf carts, AV gear, specific categories where general advice fails. Visit facebook.com → | ||
| Decluttr decluttr.com | Guides | Sell tech in bulk. |
Why it’s on the study list: filed under Guides — Sell tech in bulk. Study angle: Each marketplace's own seller center beats third-party advice; the community sites win on honest numbers. Our edge: We compete on niche depth — golf carts, AV gear, specific categories where general advice fails. Visit decluttr.com → | ||
| Gazelle gazelle.com | Guides | Trade-in electronics. |
Why it’s on the study list: filed under Guides — Trade-in electronics. Study angle: Each marketplace's own seller center beats third-party advice; the community sites win on honest numbers. Our edge: We compete on niche depth — golf carts, AV gear, specific categories where general advice fails. Visit gazelle.com → | ||
| Mercari mercari.com | Ten more worth your time | Sell almost anything. |
Why it’s on the study list: filed under Ten more worth your time — Sell almost anything. Study angle: Each marketplace's own seller center beats third-party advice; the community sites win on honest numbers. Our edge: We compete on niche depth — golf carts, AV gear, specific categories where general advice fails. Visit mercari.com → | ||
| Poshmark poshmark.com | Ten more worth your time | Fashion resale. |
Why it’s on the study list: filed under Ten more worth your time — Fashion resale. Study angle: Each marketplace's own seller center beats third-party advice; the community sites win on honest numbers. Our edge: We compete on niche depth — golf carts, AV gear, specific categories where general advice fails. Visit poshmark.com → | ||
| OfferUp offerup.com | Ten more worth your time | Local marketplace. |
Why it’s on the study list: filed under Ten more worth your time — Local marketplace. Study angle: Each marketplace's own seller center beats third-party advice; the community sites win on honest numbers. Our edge: We compete on niche depth — golf carts, AV gear, specific categories where general advice fails. Visit offerup.com → | ||
| Etsy etsy.com | Ten more worth your time | Handmade & vintage. |
Why it’s on the study list: filed under Ten more worth your time — Handmade & vintage. Study angle: Each marketplace's own seller center beats third-party advice; the community sites win on honest numbers. Our edge: We compete on niche depth — golf carts, AV gear, specific categories where general advice fails. Visit etsy.com → | ||
| Craigslist craigslist.org | Ten more worth your time | Local classifieds. |
Why it’s on the study list: filed under Ten more worth your time — Local classifieds. Study angle: Each marketplace's own seller center beats third-party advice; the community sites win on honest numbers. Our edge: We compete on niche depth — golf carts, AV gear, specific categories where general advice fails. Visit craigslist.org → | ||
| Back Market backmarket.com | Ten more worth your time | Refurbished tech. |
Why it’s on the study list: filed under Ten more worth your time — Refurbished tech. Study angle: Each marketplace's own seller center beats third-party advice; the community sites win on honest numbers. Our edge: We compete on niche depth — golf carts, AV gear, specific categories where general advice fails. Visit backmarket.com → | ||
| StockX stockx.com | Ten more worth your time | Sneakers & collectibles. |
Why it’s on the study list: filed under Ten more worth your time — Sneakers & collectibles. Study angle: Each marketplace's own seller center beats third-party advice; the community sites win on honest numbers. Our edge: We compete on niche depth — golf carts, AV gear, specific categories where general advice fails. Visit stockx.com → | ||
| The RealReal therealreal.com | Ten more worth your time | Luxury consignment. |
Why it’s on the study list: filed under Ten more worth your time — Luxury consignment. Study angle: Each marketplace's own seller center beats third-party advice; the community sites win on honest numbers. Our edge: We compete on niche depth — golf carts, AV gear, specific categories where general advice fails. Visit therealreal.com → | ||
| Amazon Seller Central sell.amazon.com | Ten more worth your time | Sell on Amazon. |
Why it’s on the study list: filed under Ten more worth your time — Sell on Amazon. Study angle: Each marketplace's own seller center beats third-party advice; the community sites win on honest numbers. Our edge: We compete on niche depth — golf carts, AV gear, specific categories where general advice fails. Visit sell.amazon.com → | ||
| Vinted vinted.com | Ten more worth your time | Secondhand clothing. |
Why it’s on the study list: filed under Ten more worth your time — Secondhand clothing. Study angle: Each marketplace's own seller center beats third-party advice; the community sites win on honest numbers. Our edge: We compete on niche depth — golf carts, AV gear, specific categories where general advice fails. Visit vinted.com → | ||