Methodology
How prices, frameset estimates, specifications, and evidence are handled.
Dataset and freshness
The generated catalog dataset was last updated ; the catalog-wide review date is . Neither date claims that every price is current: each price keeps its own observation date, market, status, and conditions.
The structured dataset is available under CC BY 4.0. Product images and linked third-party material retain their separate rights and provenance.
What is compared
The main list combines complete bikes and frameset-based builds where total cost can be compared honestly. Products are identified by exact category, model, generation, and configuration.
Frameset price estimate
Each published frameset receives the selected total build allowance, with ¥6,000 retained as the reviewed default. The compact homepage selector is a quick planning estimate, not a shopping cart or guaranteed package price.
Exact build configurator
The separate Build page selects a frameset and every required component slot. A package is counted once, and any explicitly included brake or drivetrain parts suppress duplicate rows. Price and weight remain known subtotals while one or more exact inputs are missing. Compatibility warnings cover only recorded standards and never replace seller or mechanic confirmation.
Price details
The visible price is the complete-bike price or the estimated complete-build price. The info button contains the underlying frame or included-package price, observation date, freshness, record status, conditions, and great-buy reference.
Category-specific facts
Gravel products expose tire clearance when the evidence supports it. MTB products use suspension travel, e-road products use motor and battery facts, folding products use fold or wheel data, and triathlon products use time-trial fit and storage facts. Unverified fields stay visibly unknown.
Video context
Selected model videos help buyers see a platform and hear build or ride context. They are secondary editorial material, not authority for a current price, exact BOM, specification, or recommendation. Commercial and product-supply relationships are labelled.
Materials and manufacturing
For carbon products, fiber labels such as T700, T800, or T1000 are not quality scores. Lay-up, compaction, curing, alignment, testing, traceability, and support matter more. Missing evidence increases uncertainty; it does not automatically mean a product is poor.
Corrections
Each change should identify the exact model or generation and include a source. Submit a correction or price sighting on GitHub.