Profit-first
repricing.
Onyx is a profit-first repricing tool for Amazon sellers.
Unlike other repricers that only optimize for revenue or Buy Box wins, Onyx calculates your actual net profit after ALL Amazon fees before making any price change.
Net profit, not just revenue
Every price decision factors in referral fees, FBA fees, storage costs, and your actual landed cost.
Full transparency on every change
Every price adjustment comes with a clear explanation of why it was made.
"Winning the Buy Box at a loss isn't winning. Onyx makes sure every price change protects your margins."
Simple
setup.
Connect your Seller Central account
Link your Amazon account securely via Amazon's SP-API. Your credentials are never stored — we use official OAuth tokens.
Import your listings
Onyx pulls in your catalog automatically. Review your ASINs, set cost of goods, and organize by category or strategy.
Set a strategy (or describe one in plain English)
Choose from preset strategies or describe your own in natural language. Onyx translates your intent into precise repricing rules.
Onyx takes over — automatically
Onyx monitors competitors, tracks fee changes, and adjusts prices 24/7 — all automatically. You focus on sourcing and scaling while Onyx protects your margins.
Three things
Net-profit repricing
Not just revenue optimization. Onyx calculates actual net profit after all Amazon fees — referral, FBA, storage, and more — before making any price change.
Full explainability
Every price change comes with a reason. No black-box algorithms. You always know exactly why a price was adjusted and what triggered the change.
Intelligent price raising
When competitors leave, your prices go UP, not just down. Onyx doesn't just race to the bottom — it captures margin opportunities when the market allows it.
"Most repricers optimize for the Buy Box. Onyx optimizes for your bank account."
Quick answers
Is there a free trial?
Yes, 14 days free. Credit card required.
What seller types does it support?
Wholesale, online arbitrage, retail arbitrage, and private label.
Does it support FBA and FBM?
Yes, both. Fee calculations are different for each and Onyx handles them accurately.
How fast do prices update?
Within 2 minutes of a competitor change.
Ready to protect your margins?
Stop leaving money on the table. Let Onyx handle your repricing so you can focus on growing your business.
Join the Waitlist