Payment gateway
Onyx vs Authorize.net
Authorize.net is one of the oldest gateways in the business: it authorises and settles card payments, and it is billed monthly plus per transaction.
It does not give you a checkout you can design, an order bump, or a post-purchase offer. That is the part Onyx replaces.
| Authorize.net | Onyx Checkout | |
|---|---|---|
| What it is | A payment gateway | A checkout layer for your store |
| Designs the page the buyer sees | Yes, down to the corners | |
| Order bumps and upsells | Built in | |
| Per-transaction pricing | Yes, plus a monthly gateway fee | None from us |
| On Shopify | A third-party gateway, with Shopify’s extra fee on most plans | Sits in front of your own payments account |
Figures from each provider’s published pricing, checked September 2026. Everything in the Onyx column is in the product today. Card processing is charged by your payments account in every case, including ours.
When Authorize.net is the right answer
If you already run on Authorize.net and only need processing, nothing here replaces it. If what you actually want is a checkout that converts, that is a different product — this one.
Other comparisons
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