Not sure if this has been mentioned here before; also it's neither specifically bike-related nor regarding any one particular product, but for a week now or so I've been seeing "3+ items from US $1,99" on the ali startpage, which should actually be "from US $1,79" cause that's where it starts now (EU-pricing here). Not sure, if this geo-specific or anything.
Between a lot of bargain-bin rubble, you'll find some nice stuff for very little money with free shipping. Now, most of it goes for cheap all year round, but not necessarily under-2-bucks-shipped cheap (granted you pick at least 3 different items). For example, they have some of those cheaper SCVCN glasses mentioned in this thread a few pages earlier (x62, 63, 64) in that price tier.