In the last post I looked at the relationship between ebook sales rank and actual sales for popular ebooks in the UK. This post is about those ebooks that sell less well and how the sales rank relates to actual sales for them.
Over 400 million ebooks were shifted by Amazon USA in in 2016/17 whereas the UK managed just short of 85 million. So the ratio of ebook sales between the two behemoths is of the order of 5:1. Unsurprisingly the sales rank for the same ebook differs greatly between the two.
So, are the USA sales ranks totally independent of the UK store? I think so. Inevitably there will be books that sell well in the USA and badly in the UK and vice sa versa. So to have the same ranking for both would be self defeating.