Find Any HO Scale Model. Anywhere.

The HO Scale Model Train Search Engine

TrainDex is a specialized search engine and database for HO scale (1:87) model railroading — the most popular scale in North America. We aggregate listings from eBay, specialty hobby retailers, and manufacturer direct sales into a single searchable index, so you can compare prices across sellers without visiting dozens of websites.

Our model database catalogs over 5,000 HO scale products from leading manufacturers including Athearn, ScaleTrains, Atlas, Kato, Walthers, Intermountain, Rapido, Broadway Limited, and more. Each model is linked to its real-world prototype — from EMD SD40-2 diesels to Budd streamlined passenger cars — with specifications, production history, and current market pricing from completed eBay sales.

Beyond buying and selling, TrainDex serves as a reference for the hobby. Our prototype database covers hundreds of diesel locomotives, freight cars, and passenger cars with detailed histories. The railroad directory spans every Class I carrier plus dozens of regional, short line, and fallen flag roads. And our train symbol database helps modelers build prototypically accurate consists by matching real-world freight schedules to the right equipment.