About AuctionMapper

AuctionMapper is built, operated, and maintained by Gary DeJarnett through DeJarnett Consulting. The site has been online and actively maintained since 2013 — long before most current eBay-tool startups existed.

Founded 2013 — Same Hands, Same Mission

AuctionMapper started in 2013 as a solo project to scratch a personal itch: eBay's native search worked fine for popular keywords, but searching by category, by distance from your zip code, or by total landed cost required jumping between three or four different eBay views and doing math by hand. The first version of AuctionMapper was a Flash-based eBay front-end. The Flash era ended; the underlying problem didn't. Today AuctionMapper runs on a modern React/Next.js stack against eBay's official Browse API — but the original mission is unchanged: make eBay easier to search the way buyers actually want to search.

12+ years of continuous operation matters because eBay's API policies, rate limits, and search behaviors have shifted dozens of times in that window. The tools, scripts, and category mappings you're seeing on AuctionMapper today are the result of iterating against those changes since 2013 — not a weekend project wrapped in a marketing page.

Who's Building This

Gary DeJarnett

Founder and lead operator. Background in software engineering and direct integration work against the eBay Browse, Trading, and Finding APIs. Writes the guides, the code, and the daily judgment calls about which categories and price tiers the site should support next.

DeJarnett Consulting

The parent operating entity. AuctionMapper is one of several tools and properties built and run under DeJarnett Consulting. The consulting work funds the engineering investment that keeps AuctionMapper free for visitors.

Editorial Standards

Every guide on AuctionMapper is researched and written by Gary DeJarnett — not outsourced or auto-generated. The prices, dial-color ranges, region-lock notes, authentication tips, and seller patterns you read in our buying guides come from primary research:

  • Live eBay sold-listing data for price ranges (refreshed against the Browse API on a rolling cadence — so a quoted price reflects what items are actually clearing for, not what owners are asking).
  • Manufacturer documentation for authentication detail (Rolex serial conventions, Hermès Birkin date-stamp positions, Cartier reference number formats).
  • Hands-on category-tree audits — the eBay category tree has 20,000+ leaves, and AuctionMapper's value proposition only works if the category-specific filters we surface actually match what eBay returns. We re-walk the tree regularly.
  • Update cadence: guides carry an "Updated" date. Price-sensitive content (luxury watch market pages, Birkin variants, Japanese Wii rarities) is reviewed at minimum quarterly; structural content (how to use eBay's advanced search, category-finder tools) is reviewed as eBay ships changes.

Independence and Disclosure

AuctionMapper is not affiliated with, endorsed by, or sponsored by eBay Inc. We're an independent third-party tool that uses eBay's public Browse API under their developer terms.

We participate in the eBay Partner Network (EPN) — when a visitor buys something on eBay through a click-through from AuctionMapper, eBay pays us a small commission. This commission funds the engineering work that keeps the site free. It does not change what you pay on eBay, and it does not influence which items show up in search results — those are pulled live from eBay's API and ranked by the same signals (best match, distance, total cost) that you select. See our full affiliate disclosure for details.

Get in Touch

Support & Questions

If something on the site looks wrong, an authentication tip seems off, or a category filter isn't returning what you expect — let us know.

Visit the Help page

Try It

The fastest way to understand what AuctionMapper does is to use it. Browse 20,000+ categories without typing a keyword, or sort live listings by total cost or distance.

Open AuctionMapper

Looking for the product pitch instead of the founder story? Read Why AuctionMapper to see what the tool actually does differently than eBay's native search.