I use Japanese-based sites that have EMS shipping! 
Some P.O.P are hard to get either their pre-order has been stopped or they aren’t available after being released… and some remain in stock after being released. (the popular figures won’t be found either ways)

in no particular order:
- Hobby Link Japan
- Hobby Search
- Otacute
- Aikoudo
- Amiami
- Big in JApan

and here where i answered this question in details long ago [ figures ] 
Hope this helps …  

it’s rather silly to have megahouse do a total new chopper with that face, they could have added this face with the original one! seriously >.>; 

G.E.M - Persona 4 the Animation - Shujinkou - Megahouse 

Eiichiro Oda’s Drawing for Megahouse’s P.O.P line - Megahobby Expo

Kidou Senshi Gundam SEED - Lacus Clyne - Excellent Model (MegaHouse)

One Piece - Tony Tony Chopper - Sailing Again - Kung Fu point Ver. 

Persona 4: The Animation - Shin Megami Tensei: Perona 4 - Amagi Yukiko (Megahouse)

Shin Megami Tensei: Persona 4 - Persona 4: The Animation - Konohana Sakuya  (megahouse) 

Fate/Zero - Gilgamesh (MegaHouse)
Fate/Zero - Rider - 1/8 (MegaHouse) 

One Piece - Killer - Excellent Model - Portrait Of Pirates DX - 1/8 (MegaHouse)