Affiliate Disclosure

Last updated: June 2026

Disclosure: Treblemakers earns affiliate commissions when you click through to a marketplace and make a purchase. This means we have a financial relationship with some of the marketplaces we link to. The price you pay is never affected by our commission.

How We Make Money

Treblemakers is a free comparison shopping engine for used musical instruments. We search across online marketplaces and present them in a single search interface to help you find and compare the best deals.

When you click a "View on" link and make a purchase on one of our affiliate marketplace partners, Treblemakers may receive a small commission from that marketplace. This is called an affiliate commission.

What This Means for You

  • No extra cost. The price you pay on the marketplace is the same whether you arrive through Treblemakers or directly. Our commission comes from the marketplace, not from you.
  • We may earn a commission. If you click a link on Treblemakers and complete a purchase from an affiliate partner, we may earn a percentage of the sale. Commission rates vary by marketplace.
  • Not every link earns us money. We index listings from many sources regardless of whether we have an affiliate relationship with them.
  • Results are not ranked by commission. Our search results are ordered by relevance, price, and condition — not by which marketplace pays us more.

Active Affiliate Programs

We currently have active affiliate relationships with the following marketplaces. Links to these sources include affiliate tracking, and qualifying purchases earn us a commission:

  • eBayVia the eBay Partner Network (EPN). Commission earned on eligible completed purchases.
  • ReverbVia Awin (merchant ID 67144). The leading marketplace for musical instruments. 5% commission on sales, $5 bonus per new buyer.This application uses the Reverb API but is not endorsed, created by or certified by Reverb.com, LLC.
  • AmazonVia Amazon Associates. We participate in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.
  • MustarVia Awin (merchant ID 116829). Musical instrument and accessories retailer.
  • Vibeworks GuitarsVia Awin (merchant ID 102255). Boutique guitar retailer.

Other Sources We Search

We also index listings from the following sources. We do not currently have active affiliate programs with these marketplaces — clicking their links does not earn us a commission:

  • Guitar Center / Music Go Round
  • Musician's Friend
  • Willcutt Guitars
  • Tone Shop Guitars
  • The Music Zoo
  • RetroFret
  • Elderly Instruments
  • Chicago Music Exchange
  • Dirt Cheep
  • ShopGoodwill

This list is updated as we add new sources and partnerships.

Amazon Associates Disclosure

Treblemakers is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. As an Amazon Associate, we earn from qualifying purchases.

FTC Compliance

This disclosure is provided in accordance with the Federal Trade Commission's Endorsement Guides, which require clear disclosure of material connections between publishers and the products or services they recommend.

We believe in full transparency. If you have questions about our affiliate relationships, please contact us.

Editorial Independence

Our affiliate partnerships do not influence how we display or rank search results. Listings are indexed from marketplace APIs and ranked by relevance to your search query, price, condition, and recency — never by commission rate or affiliate status.