@acala-network/sdk-payment

This SDK is used to provide flexible fee estimation and querying related functionalities,the SDK can also be used to determine if an input value is valid and to retrieve the maximum value that a certain token can be traded for.

Use cases:

1. If a user sets KSM as the payment currency and the transaction requires 0.01 KSM, then the maximum amount the user can use is balance - 0.01.