I understand that collection from home is available under Simple Delivery, this is eBay's answer.
Collection is available with Simple Delivery through Royal Mail. If you'd like your sold item to be collected, make sure Royal Mail is selected as one of your preferred carriers. Once your item is sold and after you've generated a prepaid label on eBay, book your collection on the Royal Mail website.
It says ' generate the prepaid label' now I have not used this service, it might be worth checking with RM if they can print the label on collecting the item.
@sylvias5332