To set the currency to GBP (pound sterling) as the default pricing on eBay, you can follow these steps:

1 Log in to your eBay account.

2 In the upper right corner of the page, hover over your username and select "Account Settings" from the drop-down menu.

3 In the "Account Settings" page, select "Site Preferences."

4 In the "Site Preferences" page, find the "Currency" section.

5 In the "Currency" section, select the "Change" button.

6 In the pop-up window, select "British Pounds (GBP)" as your preferred currency.

7 Click the "Save" button to save the changes.

Once you complete the above steps, your eBay account will default to using GBP (pound sterling) for pricing and transactions.