How to collect commission for sales channel app

[chengdu]

Hi API guru,

Let's say the app uses checkout API or orders API, then what are the common ways to collect commissions?

The only official document I can find is to use billing API by creating usage records.

https://shopify.dev/tutorials/build-a-sales-channel

Are there any other ways charing merchants commissions?

Also let's say if the app does use billing API, what's the common pattern using it? Creating a usage record for every single order?

Any suggestions would be greatly appreciated!

[chengdu]

A followup question is, if billing API is the only way automating commission charging process, is the 20% shopify platform fee fixed? Thanks.

[jborden13]

Hey I'm 2 years down the road asking the same questions.  What did you find regarding how to best charge commissions in a sales channel app? The Billing API still lacks any clarity on the topic.

Thank you.