For the US, that seems to be a good price. In my first year or so of stacking, I paid a lot more than that for my proof kilo Tiger.....but I'm perfectly okay with it because the quality is superior and the mintage low. The proof kilo Lunar coins are truly exceptional coins. Some day I hope to complete the entire 12 coin set. .
I think JMBullion did a remint of these, and when they came out I believe they were selling for like $620.00. They were selling like hotcakes, and then he increased the price. http://www.jmbullion.com/2010-1-kilo-australian-silver-tiger/ Maybe there will be another reminting before 2019?