While I don't blame the seller for the postage as it is Ebay that is pushing this 'Paclink' rubbish almost forcing sellers to use Royal Mail.
The sad fact is while RM are as expensive as say Evri (hermes) & they are completely usless and very very slow. Average 48 hr delivery times are a week minimum, with pointless tracking that nust says 'we have it'. Yet order from China and it has detailed tracking and arrives often sooner. So why use it