3,4 years ago, it's very profit.
But right now ,the price that taobao sellers getting, is lower than you can find in the us market.
Do some research before you pursue.
think how many chinese in USA that 70's 80's and 90's .
Even 1 of 10,000 doing 海外代購, how many total existed already?
It's really hard for newbie to entry.