I built an app that hunts vintage across 28 marketplaces while I sleep. Tell it what you're looking for once — it checks every day and brings you the finds. No retyping the same search every morning. It's called Prowl: owlandtwigvintage.com/prowl it works on your phone, or laptop, install it as an app. Also as a Chrome Extension: https://chromewebstore.google.com/detail/bpcdgdihcdbhdepcniolghboecgchehj?utm_source=item-share-cb Every time I hunted a piece I'd sear
痛点：复古/二手买家需要每天手动在 eBay、Etsy、Poshmark、ShopGoodwill 等 20+ 个平台逐一重复搜索，耗时且容易错过好货。
目标用户：复古服饰/藏品淘货者、二手转卖商（reseller）、捡漏爱好者
证据：Every time I hunted a piece I'd search eBay, Etsy, Poshmark, ShopGoodwill and the rest, one at a time. I would days or weeks and hard to find items would pass me by. / you type a piece once and it builds the search for 28 marketplaces on one screen
变现：Freemium 订阅：免费监控少量关键词/平台，付费解锁更多 hunts、每日提醒、新品高亮、图片估价与深研报告；或按年费付费。
MVP：先只做 3-5 个主力平台（eBay、Etsy、Poshmark、ShopGoodwill），用关键词一次性聚合搜索+保存 hunt+每日新增标记，邮件/推送提醒，2 周可上线；抓取用官方 API 或轻量解析，先验证留存再加平台。
竞品：eBay Saved Searches、Gixen、Terapeak、WorthPoint、Gem (gem.app)、Poshmark/Etsy 原生搜索
摘要：作者发布 Prowl，一个一次输入即可在 28 个二手/复古平台自动搜索并每日推送新品的工具，含 Chrome 扩展与图片估价功能。核心痛点是多平台重复搜索耗时、易错过好货，目标用户是复古淘货者和转卖商。但帖子是开发者自我推广，无任何付费意愿或收入数据佐证。