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I built inventory for thrift resellers on one row per unit. Here's what changed after your feedback

A few weeks ago I asked here about tracking each unit as its own record versus storing a quantity, for thrift and estate-sale resellers. I got a lot of good pushback, especially "the list gets painful past a few hundred rows," "you'll want search and multi-select no matter what," and "build CSV import, everyone has a spreadsheet." I built most of it, so here's an update. The model (unchanged) One row per unit, since thrift stock is almost never truly identical. Sales and ref

五维评分

付费意愿
52
需求真实度
62
个人可落地
85
竞争空间
50
新鲜度
58

AI 分析

痛点:旧货与遗产拍卖转卖者的库存几乎每件都不同,按数量记账的表格在几百行以后就难维护,且算不清含油费等共同成本的真实 ROI。

目标用户:在 eBay、Poshmark、Whatnot 等平台做 thrift store、estate sale 收购转卖的小卖家(一人或夫妻档)

证据:"the list gets painful past a few hundred rows," "you'll want search and multi-select no matter what," and "build CSV import, everyone has a spreadsheet." / "I tested with 5,000 items, and Inventory opens in about a second from a local cache."

变现:订阅制 SaaS,免费版限 100 件;付费 9–19 美元/月(按件数分档),再加 CSV 批量导入、多平台销售同步等增值功能

MVP:两周内做:CSV 导入 Excel 库存 → 一行一件(同款可堆叠显示)→ 搜索、批量选中修改状态或删除 → 记录销售和退款事件,退款不修改原销售记录 → 共享成本(油费)按件均摊并分别计算含与不含的 ROI;用 SQLite 或浏览器 IndexedDB 本地缓存,不做后端也能跑

竞品:InventoryLab、MyResellerHome、NeatoScan、Vendoo、Sortly、Google Sheets、Airtable 上的二手库存模板

摘要:作者在 r/SideProject 发布了一款面向旧货转卖者的库存工具,核心做法是每件商品单独一行,销售和退款分别为独立事件,共同成本均摊后可分别计算含与不含共同成本的 ROI。此前帖子里收到多条真实反馈(几百行后列表难用、需要搜索和多选、需要 CSV 导入),他已完成堆叠行、5,000 件懒加载(本地缓存约 1 秒打开、服务端拉取 0.13 秒)、搜索批量操作和 SKU。帖中未出现任何付费意愿或收入数据,说明需求真实但变现未被验证。