Testing whether Jev can blind-estimate used product prices to build a price database
NickPassig · x · 2026-09-26
The author tested whether TypeSafe Jev can generate dollar-price estimates from product descriptions alone, aiming to populate a large product-price database without researching comparable sales for every item.
- Test items: Pioneer SX-1980 receiver, McIntosh MC275 tube amp, used PS5 Slim Disc Edition
- Methods: broad range first, then interval selection, successive price-threshold judgments, candidate comparison, and interval refinement to converge on a figure
- Compares blind estimates vs evidence-informed estimates after supplying completed-sale listings
A reusable framework for LLM-based price estimation, useful for valuation or comparison-shopping apps.
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