I understand your question. In any event the answer is no, we cannot specify a different power adapter than the one used in the country in which that Mac is sold. However, you can also pre-order an Apple World Travel Adapter Kit - Apple, which will include the European plug adapter. Or, you can use any inexpensive plug adapter commonly sold in many places in the US and elsewhere. It will accomplish the same thing for probably $25 less.
I do not understand your "flimsy and unsafe" comment though.
the main reason why I’m buying the MacBook while visiting because in my country every thing is expensive specially apple products..
I understand. Apple should really charge more for Macs. Compared to everything else we have to pay for in the US, Apple products are far too inexpensive and they last far too long.