One thing for sure, there is no other methods than buying the same or similar prices back in the US LEGO retail stores. Other parts of the world are paying dearly for it, so it is more or less a norm for us to accept. There is no way plus the fact that you will need to factor in shipping. You can't buy LEGO from Amazon US.com or Shop@Home.com (doesn't applies to countries in this part of the world), you may try B&N or Amazon France. Not sure of the shipping restrictions in Taiwan. In general, all LEGO sets in Asia Pacific region is normally 2 times or more as compared with the prices in US.
So, if I am looking at it correctly, the Pet Shop costing only 200 USD is considered very affordable in Taiwan when it costs SGD$300.00 converted to USD$240 in Singapore LEGO shops.