As part of the AliExpress Singles Day sale kicking off on the 11th are these discounts that'll apply automatically at checkout on eligible products. These discounts stack with AliExpress coupons including the sitewide coupons, selected coupons and seller coupons.
Eligible products will have "US$4 off every US$20 (max US$16)" in red text near the price. This discount can be used multiple times.
Ah eligible products only… :(