Amazon UK: Wii U Sales Rank Jumps 875% Following Microsoft’s Xbox One Reveal

[Barozi]

Osc89 said:

Barozi said:

I'd guess so, but ioi can't keep a look out for every single limited retailer discount.
Actually if ioi doesn't read this thread, I could imagine that the numbers will stay flat for next week.

Ha, sorry. I completely forgot that the site is based on estimates. Actually, I'm not entirely sure how it works, does he get information from retailers?

ioi got some sources within the most important countries, (well perhaps not Japan, where it seems like he's just taking the average of Famitsu and Media Create) but surely not within every store chain.

Not sure if he's just good friends with them or if he pays these sources.

EDIT: This should help :P
http://www.vgchartz.com/methodology.php