if you come to USA, there are many methods and places that you can buy good computer, especially at price of NT$60000. if you don't really know much about computer, I recommand you buy the brand name computer (HP, Dell, gateway, and many many) with very nice service in USA. if you really want to assemble or customize computer by yourself, there are multiple online computer stores in USA. Velocity Micro newegg(you have to assemble computer by yourself) Micro Center has physical Stores in multiple location. you can buy computer in ebay too.
you can have lots choice in USA. In fact many price of computer parts is USA are cheaper than in Taiwan. (I have no idea why it's happened, over 80% of computer parts are manufacturing in Taiwan, but computer parts in Taiwan is more expensive in USA. for example, Lian-Li computer case, it likes Rolls Royce in USA. it means Lian-Li case is the best of the best computer case in USA, and it's really expensive; however, average price of Lian-Li computer case in USA is cheaper than in Taiwan. you can compare price in Google or newegg)
so I don't think it is good idea to buy computer in Taiwan and then bring it to other countries (don't forget you might have to pay custom tax with brand new computer), you only need Keyboard and Chinese Traditional Windows and bring them with you and you can buy rest of them in USA or other countries.
其實今年北美地區經濟衰退,為了維持足夠的業績很多廠商都無所不用其極的大作促銷活動,建議您不妨趁一些像是Back to school、Black Friday之類的促銷檔期好好搜尋一下好貨色便宜入手,那種殺價的空間絕對不是在台灣見得到的!
其實根據個人這幾年來世界各國到處跑的感想,發現電腦產品方面,大概只有幾種東西比較值得在台灣購買帶出國用,因為從沒看過有地方能比台灣便宜的。這些東西包括記憶體(無論是電腦裡面插的RAM module或是相機、手機用的記憶卡,台灣真是便宜到匪夷所思的境界),另外一個價差最大的就是像是網路線、充電器、變壓器之類的小配件,除此之外的東西,縱使是made in Taiwan的,也不見得台灣買比較便宜,樓主不妨參考。