There won’t be much point my checking to see if I’ve sold any books on eBay or Amazon during the next week. Who's going to buy a book that’ll end up logjammed in a sorting office? Never mind your grievances, chaps. If businesses switch to other couriers, you won’t have jobs at all.
edit: since posting this, I have sold two books, both to overseas buyers. I have had to write apologising for not being able to ship out their books yet. This is very embarrassing.