I ordered one copy of 'Gut' by Giulia Enders, but received two! I came to your website (as an alternative to the Amazon monopoly) simply wanting to order a book, but had not reckoned on having to sign up to an account (though I suppose this is what every commercial retailer aims to do for extra custom these days. So I decided to abandon my first attempt and try again (so why did I get two?!). Notably there was no invoice page where I could amend the order if it showed I was purchasing two copies instead of one. Fortunately (for your company) my wife found a friend who accepted it.