Does the fee amount change with White Label?
Yes, the operation fee differs with White Label. The usual API connection charges only 0.5% for every operation.
With connected White Label the fee amount for every operation equals 1.5% (Invoicing - 0.5% + White Label 1%). In the API settings you can choose who is going to pay this fee - you or your client.
The fee for transactions in ETH and ERC20 tokens is different.
Why does my business need White Label? - https://plisio.net/faq/why-does-my-business-need-white-label