Incidentally for anyone interested in the above, and how your buying choices affect authors (it can be very nuanced) this article gives a good overview:
Buying choices - The Society of Authors
Everyone loves a bargain, but as the Fairtrade movement has shown, a good deal for the consumer can add up to a poor deal for the producer. Authors want their books to reach as many readers as possible, but they also need (and deserve) to be paid. As ALCS’ 2018 survey showed, the average income
www2.societyofauthors.org