For any sales nerds that care, here's the
shoseki rankings (physical sales) so far.
September 6th (I think this is presale): Place 168 of 500.
September 7th Presale: 242.
September 8th Presale: 481.
September 9th (release): 174.
September 10th: 221.
September 11th: 226.
September 12th: 312.
September 13th: 321.
Should probably get weekly and estimated sales in a couple of days, I'll update this post then. But it looks to be selling fairly well.
Edit: Weekly sales September 9th to September 15th: 301. Place 300 should be 1650 sales according to the statistics, though that's not included the presales from September 6th to September 8th, so it probably sold a bit more.