Nothing a local links webpage can't do Rated 2 out of 5 stars

Unless I am missing something, you can simply put all these links on a local page, bookmark it and you don't need one more addon, button or menu item. Also, some configuration would be necessary (eg user id/password for auto-logon and choice of national ebay version like ebay.co.uk).

This review is for a previous version of the add-on (0.3).