I've had the opposite, price-wise - eBay charged 3p less than the online cost  quoted for sending Royal Mail 48.  BUT... my item should be delivered today and it's not showing as due.  If it fails, it will be the first time ever that I have sent something by this service and it has not arrived on time.  Or, in other words, put two grasping, sh1te companies together and what more can I expect. 🤔