This shows how awful it is for publishers in the UK and it has a direct impact on writers. One way is, at bookshops and events abroad now your books cost more to import and take much longer to get through customs - I’ve been the only author at events whose books hadn’t arrived.
Time is money. If it takes twice as long to do something you earn half as much. This is the brutal fact at the heart of Brexit.
Let’s "Brexit" a £12.99 paperback, blow by blow, and see what difference leaving the single market has made.