Quote:
Originally Posted by relentlessflame
The best explanation you'll find is probably here in Section 4.
The short answer is that they don't actually know how many sales are occurring. They're just using the sales rankings on Amazon to estimate sales based on past trends. For example, if something is the top-selling DVD/BD on Amazon for a whole day, you know that's a whole lot of sales (because Amazon sells a whole lot of stuff). If something is only like the 1000th ranking... that's not so great. The points are an estimate of accumulated orders based on ranking over time. They use Amazon as representative of the larger market because it gives good data, even though obviously not everyone will buy their DVDs/BDs on Amazon, so there can be some cases where the Amazon estimates suggest one thing but actual sales are quite different because either more or less customers bought from Amazon vs. other stores in Japan. |
Thanks for the explanation, and link. There's a lot to take it, but it's interesting to read.