reddit · SideProject · 11-01 10:50 52 分 ← 返回列表

I kept missing second-hand deals because I only ever checked one site. So I built a bot that searches marketplaces all over Europe at once.

A few months ago I was looking for a used iPhone 14. I checked the internet, like everyone does, scrolled for twenty minutes, found one at a fair price and bought it. Two weeks later I was on Vinted for something else and the same phone was sitting there — same storage, same condition, eighty euros less. It had been listed four days before I bought mine. I just never looked, because Marktplaats is the site you check, and when you've found something reasonable you stop looking.

五维评分

付费意愿

需求真实度

个人可落地

竞争空间

新鲜度

AI 分析

痛点：欧洲二手买家只逛一两个熟悉的市场，跨平台、跨国同款商品价差明显（同一台 iPhone 14 便宜 80 欧），却没有任何聚合搜索和实时提醒手段。

目标用户：欧洲（尤其荷语区与跨境）二手淘货者、捡漏/转卖玩家、想省钱的普通消费者

证据：Two weeks later I was on Vinted for something else and the same phone was sitting there — same storage, same condition, eighty euros less. It had been listed four days before I bought mine. I just never looked... nobody opens fifteen marketplaces in fifteen countries before buying something.

变现：免费基础搜索 + 付费订阅（多国家覆盖、更低延迟提醒、更多关键词/无限提醒、Telegram/邮件推送），辅以二手平台联盟返佣；Discord bot 内做 Premium 角色订阅。

MVP：两周内做 3–5 个核心站点（Marktplaats、2dehands、Vinted、eBay Kleinanzeigen）的关键词+价格区间聚合搜索，加一个价格归一化解析层（千分位/小数逗号/无分隔符），并做一个 cron 轮询 + Discord/邮件新上架提醒；先只做单一国家，验证用户是否真的为“更快提醒”付费。

竞品：Marktplaats 站内保存搜索与邮件提醒、eBay Kleinanzeigen 保存搜索、Vinted 关键词通知、Shpock、各类 Discord/Telegram 二手上新 notifier 机器人

摘要：作者因为只逛 Marktplaats，错过一台在 Vinted 上便宜 80 欧、且早四天挂出的同款 iPhone 14，于是做了一个覆盖欧洲多国二手/拍卖/比价站点的 Discord 搜索与上新提醒机器人。帖子只讲个人经历与技术坑（各国价格格式、匈牙利福林无分隔符），未提及定价、收入或他人付费反馈，需求真实但商业化尚未验证。