Affiliate Disclosure

Last updated: March 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 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 partner marketplaces, 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, we may earn a percentage of the sale. Commission rates vary by marketplace.
  • Not every link earns us money. Some marketplace links may not include affiliate tracking. We include links to all relevant listings regardless of whether we earn a commission.
  • Results are not ranked by commission. Our search results are ordered by relevance, price, and condition — not by which marketplace pays us more.

Our Marketplace Partners

We currently search across the following marketplaces. When affiliate programs are available, links to these marketplaces may include affiliate tracking:

  • eBay — via the eBay Partner Network
  • Reverb — the leading musical instrument marketplace
  • Guitar Center Used — major retailer pre-owned inventory

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

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.