Steps on how to edit eBay Store Custom Page:

Step 1:When on Manage My Store, select Custom Pages on the Left Menu under Store Management / Store Design.

Step 2: Click Change link beside Custom Pages.

Step 3: On the Custom Pages Page, change the action dropdown of the desired page that you wanted to edit.

Step 4: Make necessary changes on the page as desired. Click Continue button when done. (Drag bottom right corner of text box to change the text box size)

Step 5: Preview changes then press Save and Publish. You can now visit your Custom Page to see if changes took effect.

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