There are usually 2 ways to source products on 1688 Taobao, photos and keywords search. With photo search on 1688 Taobao you may find exactly the same product dropshipping suppliers, with keyword search you may need to take more time to filter and optimize your keywords, then you can sort by price to find cheaper suppliers.
However, when we dropship from 1688 Taobao price isnt the only criterion, quality should be also concerned. Due to the large number of sellers on 1688 taobao, the competition is sufficient and the price closely related to product quality, thus when we filter suppliers we should focus on the product sales, secondary purchase rates, product reviews etc. instead of price only.