So how does sourcing on Taobao differ from sourcing on Aliexpress? The language is different of course, but what about prices?
If you can purchase goods from TaoBao without being screwed by a 10% fee, not getting the money the agent haggles down, and dealing with a lazy ass "company" (that really consists of 1 person) who only wants to ship through EMS whom come and pick up the package from them, instead of making calls and finding the cheapest way to ship something.
AliExpress is marketed towards westerners so prices are naturally increased, and even with their fake ass "escrow service" your chances of never seeing your items are higher.