Volume 2 drops v4

V1 -> V2+(depending on when it drops), only includes those with a 20%+ drop, the anime estimated below 2k(v1) are also excluded.  Which goes for Mahou Sensou and Nobunaga the fool for this season.


Series for which volume 1 has not come out yet

• *2.4k -> 1.0k Hamatora(v3 goes down -58%)
  
• *3.0k -> 1.8k Nourin(down -40%)
  
• 11.8k -> 7.5k Hoozuki no Reitetsu(down -37%)
  
• *2.2k -> 1.5k Space dandy(down -32%)
  

Series for which volume 1 has come out

• *3.6k -> 0.5k Super Sonico(down -85%)
  
• *5.8k -> 2.6k Noragami(v3 goes down -56%)
  
• *3.0k -> 1.9k Wake Up, Girls!(down -37%)
  
• *2.6k -> 1.7k Sakura Trick(down  -33%)
  
• *6.4k -> 4.7k Nisekoi(down -27%)
  
• *6.4K -> 4.8k Mikakunin de Shinkoukei(down -25%)
  

real v2/3 drops

• 47% Nourin(+7% off)
  
• 41% WuG(+4% off)
  
• 27% Mikakunin de Shinkoukei(+2% off)
  
• 25% Space Dandy(-7% off)
  
• 48% Noragami(-8% off)
  
• 23% Sakura Trick(-10% off)
  
• 16% Nisekoi(-11% off)
  
• 13% Hoozuki no Reitetsu(-24% off)
  

Still to add,
-Noragami