Case Study
BikeBook
The Kelley Blue Book for bicycles — free, instant used-bike valuations across 20+ brands.
↗ Try BikeBook live
01 — The Problem
Used bikes don't have a Kelley Blue Book.
Cars have a trusted, standardized valuation source. Bikes don't — pricing a used bike for sale or trade-in is mostly guesswork. BikeBook gives a private-party range and a trade-in value from a few quick picks: brand, model, year, condition, mileage.
02 — The Build
A component-based valuation model.
- Frontend: Next.js and React.
- Data layer: a Prisma ORM over SQLite, deployed on Vercel.
- Valuation: a component-based model that combines brand, model, year, condition, and mileage into a private-party and trade-in range.
Why it matteredThe whole point was speed — no account, no waiting: pick five things, get a real number, in a browser tab.