The eBay payment form is used to define a preset for the selected payment option when listing an item at eBay.
The eBay Payment form:

The following fields are available (eBay Site Settings):
| Field | Description |
|---|---|
| Default eBay Payment Method | The default eBay payment method to use when listing items on eBay. |
| PayPal email Address | This email address is used, when PayPal is set as payment method at an eBay listing. |
This presets can be set by each vendor separately