The best way to buying a solid good quality anime action figures of your choice is to simply travel to Akihabara, Japan.

 

However, most people do not have time to go visit Japan whenever they feel like it, so auction might be your solution. Personally, I would not buy them on the internet without actually seeing them with my own eyeballs to make sure they meet my satisfactions. Nonetheless, some people are very generous in Japan, especially when it comes to Otaku related people.

 

Mania, or Otaku, are the people who would put all their energy into one thing, so if they love anime action figures, they love them with all their heart, 100 percent. So, if you buy them through say Yahoo Japan Auction, chances are, the people exhibiting anime action figures are feeling so sad as if they are giving out their children. So, you can see how well those figures' been treated by them and that they are in good condition.

 

You can actually go to Yahoo Japan Auction site and have google translate the page to follow the instruction to register, but I remember them asking a Japanese address, so you sholud make a good friends with Japanese Mania and they will buy and ship for you.