Amazon US January monthly bestsellers and general amazon based discussions

[Insidb]

Roronaa_chan said:

Insidb said:

According to VGC's own estimates and MS' recently publiched numbers, the X1 is overtracked by at least 200K LTD.

And PS4 is undertracked by ~70k until 3rd January.

I guess you can add ~300K to the gap.