I’m keen to expand my knowledge of cocktails, and cachaça is an essential ingredient in caipirinhas. And yes, I like lounge music.
I’ve never seen any here in Taiwan, but you can get it in Macao.
I know of a bar that has it here, though never seen it retail…
Yes, you can get cachaca in Taiwan 
See the description in this thread flob.me/p719927 for where to get it:
[quote]South side of Ba De Road, between Core Pacific ‘THE LIVING’ Mall(the deathstar) and the nissan dealership on the same side of the road. located next to a pharmacy. look for the 煙洋酒檳榔characters(not necessarily in that order)
[/quote]
It’s the shop in the right hand side of this picture:
On Google maps that would be here:
[googlemaps]25.048447,121.560781[/googlemaps]