r/startup • u/bjj_beast • 14h ago
knowledge I built software to run my own watch business, and one feature turned into a product other dealers pay for. Now I need help keeping them (I will not promote)
I sell pre-owned luxury watches. Over the last year I built my own software to run the business: clients, inventory, deals, shipping, accounting, and AI agents that do the legwork while I make the decisions. I built it because I’m a one-person operation and my time is the bottleneck.
The most useful piece turned out to be pricing. The question I get most is “what’s this watch actually trading for?” The real answer isn’t public. Retail sites show asking prices, but dealers trade with each other at wholesale, and those numbers only move through private WhatsApp groups and DMs. So my software started capturing every wholesale price I saw: reference, dial, bracelet, year, box and papers, price, date. That grew into tens of thousands of sales across thousands of references.
Then another dealer asked if he could pay to look something up. That’s when it clicked: a tool I built for myself was a business on its own.
So I spun that feature out into a subscription for dealers: search a watch, see what dealers actually paid recently, filter by the details that move the price, and work out the most you can pay for the margin you want. $49 a month.
Goal: 300 paying users in 3 months.
For anyone who has spun an internal tool out into a product, or built a niche B2B data product:
- How did you turn a “look it up when I need it” tool into something people open every week? I’m considering alerts on watches a dealer holds and a weekly email showing what their inventory is worth today, both borrowed from what I use myself.
- Would you lower the price, offer a founding-member rate with a deadline, or keep the price and fix retention first?
- In a small, word-of-mouth industry, what worked best for your first 100 customers?
I’ll share what I learn as it goes.